80989020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 288

約数和(自身を含む): 314496000

約数和(自身を除く): 233506980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 19, 20, 21, 28, 30, 34, 35, 36, 38, 42, 45, 51, 57, 60, 63, 68, 70, 76, 84, 85, 90, 95, 102, 105, 114, 119, 126, 133, 140, 153, 170, 171, 180, 190, 199, 204, 210, 228, 238, 252, 255, 266, 285, 306, 315, 323, 340, 342, 357, 380, 398, 399, 420, 476, 510, 532, 570, 595, 597, 612, 630, 646, 665, 684, 714, 765, 796, 798, 855, 969, 995, 1020, 1071, 1140, 1190, 1194, 1197, 1260, 1292, 1330, 1393, 1428, 1530, 1596, 1615, 1710, 1785, 1791, 1938, 1990, 1995, 2142, 2261, 2380, 2388, 2394, 2660, 2786, 2907, 2985, 3060, 3230, 3383, 3420, 3570, 3582, 3781, 3876, 3980, 3990, 4179, 4284, 4522, 4788, 4845, 5355, 5572, 5814, 5970, 5985, 6460, 6766, 6783, 6965, 7140, 7164, 7562, 7980, 8358, 8955, 9044, 9690, 10149, 10710, 11305, 11343, 11628, 11940, 11970, 12537, 13532, 13566, 13930, 14535, 15124, 16716, 16915, 17910, 18905, 19380, 20298, 20349, 20895, 21420, 22610, 22686, 23681, 23940, 25074, 26467, 27132, 27860, 29070, 30447, 33830, 33915, 34029, 35820, 37810, 40596, 40698, 41790, 45220, 45372, 47362, 50148, 50745, 52934, 56715, 58140, 60894, 62685, 64277, 67660, 67830, 68058, 71043, 75620, 79401, 81396, 83580, 94724, 101490, 101745, 105868, 113430, 118405, 121788, 125370, 128554, 132335, 135660, 136116, 142086, 152235, 158802, 170145, 192831, 202980, 203490, 213129, 226860, 236810, 238203, 250740, 257108, 264670, 284172, 304470, 317604, 321385, 340290, 355215, 385662, 397005, 406980, 426258, 449939, 473620, 476406, 529340, 578493, 608940, 642770, 680580, 710430, 771324, 794010, 852516, 899878, 952812, 964155, 1065645, 1156986, 1191015, 1285540, 1349817, 1420860, 1588020, 1799756, 1928310, 2131290, 2249695, 2313972, 2382030, 2699634, 2892465, 3856620, 4049451, 4262580, 4499390, 4764060, 5399268, 5784930, 6749085, 8098902, 8998780, 11569860, 13498170, 16197804, 20247255, 26996340, 40494510, 80989020]

約数ペア:

[(1, 80989020), (2, 40494510), (3, 26996340), (4, 20247255), (5, 16197804), (6, 13498170), (7, 11569860), (9, 8998780), (10, 8098902), (12, 6749085), (14, 5784930), (15, 5399268), (17, 4764060), (18, 4499390), (19, 4262580), (20, 4049451), (21, 3856620), (28, 2892465), (30, 2699634), (34, 2382030), (35, 2313972), (36, 2249695), (38, 2131290), (42, 1928310), (45, 1799756), (51, 1588020), (57, 1420860), (60, 1349817), (63, 1285540), (68, 1191015), (70, 1156986), (76, 1065645), (84, 964155), (85, 952812), (90, 899878), (95, 852516), (102, 794010), (105, 771324), (114, 710430), (119, 680580), (126, 642770), (133, 608940), (140, 578493), (153, 529340), (170, 476406), (171, 473620), (180, 449939), (190, 426258), (199, 406980), (204, 397005), (210, 385662), (228, 355215), (238, 340290), (252, 321385), (255, 317604), (266, 304470), (285, 284172), (306, 264670), (315, 257108), (323, 250740), (340, 238203), (342, 236810), (357, 226860), (380, 213129), (398, 203490), (399, 202980), (420, 192831), (476, 170145), (510, 158802), (532, 152235), (570, 142086), (595, 136116), (597, 135660), (612, 132335), (630, 128554), (646, 125370), (665, 121788), (684, 118405), (714, 113430), (765, 105868), (796, 101745), (798, 101490), (855, 94724), (969, 83580), (995, 81396), (1020, 79401), (1071, 75620), (1140, 71043), (1190, 68058), (1194, 67830), (1197, 67660), (1260, 64277), (1292, 62685), (1330, 60894), (1393, 58140), (1428, 56715), (1530, 52934), (1596, 50745), (1615, 50148), (1710, 47362), (1785, 45372), (1791, 45220), (1938, 41790), (1990, 40698), (1995, 40596), (2142, 37810), (2261, 35820), (2380, 34029), (2388, 33915), (2394, 33830), (2660, 30447), (2786, 29070), (2907, 27860), (2985, 27132), (3060, 26467), (3230, 25074), (3383, 23940), (3420, 23681), (3570, 22686), (3582, 22610), (3781, 21420), (3876, 20895), (3980, 20349), (3990, 20298), (4179, 19380), (4284, 18905), (4522, 17910), (4788, 16915), (4845, 16716), (5355, 15124), (5572, 14535), (5814, 13930), (5970, 13566), (5985, 13532), (6460, 12537), (6766, 11970), (6783, 11940), (6965, 11628), (7140, 11343), (7164, 11305), (7562, 10710), (7980, 10149), (8358, 9690), (8955, 9044)]