81337860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1399}}^1$

素因数の和:1450

約数の個数: 144

約数和(自身を含む): 275184000

約数和(自身を除く): 193846140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 45, 51, 57, 60, 68, 76, 85, 90, 95, 102, 114, 153, 170, 171, 180, 190, 204, 228, 255, 285, 306, 323, 340, 342, 380, 510, 570, 612, 646, 684, 765, 855, 969, 1020, 1140, 1292, 1399, 1530, 1615, 1710, 1938, 2798, 2907, 3060, 3230, 3420, 3876, 4197, 4845, 5596, 5814, 6460, 6995, 8394, 9690, 11628, 12591, 13990, 14535, 16788, 19380, 20985, 23783, 25182, 26581, 27980, 29070, 41970, 47566, 50364, 53162, 58140, 62955, 71349, 79743, 83940, 95132, 106324, 118915, 125910, 132905, 142698, 159486, 214047, 237830, 239229, 251820, 265810, 285396, 318972, 356745, 398715, 428094, 451877, 475660, 478458, 531620, 713490, 797430, 856188, 903754, 956916, 1070235, 1196145, 1355631, 1426980, 1594860, 1807508, 2140470, 2259385, 2392290, 2711262, 4066893, 4280940, 4518770, 4784580, 5422524, 6778155, 8133786, 9037540, 13556310, 16267572, 20334465, 27112620, 40668930, 81337860]

約数ペア:

[(1, 81337860), (2, 40668930), (3, 27112620), (4, 20334465), (5, 16267572), (6, 13556310), (9, 9037540), (10, 8133786), (12, 6778155), (15, 5422524), (17, 4784580), (18, 4518770), (19, 4280940), (20, 4066893), (30, 2711262), (34, 2392290), (36, 2259385), (38, 2140470), (45, 1807508), (51, 1594860), (57, 1426980), (60, 1355631), (68, 1196145), (76, 1070235), (85, 956916), (90, 903754), (95, 856188), (102, 797430), (114, 713490), (153, 531620), (170, 478458), (171, 475660), (180, 451877), (190, 428094), (204, 398715), (228, 356745), (255, 318972), (285, 285396), (306, 265810), (323, 251820), (340, 239229), (342, 237830), (380, 214047), (510, 159486), (570, 142698), (612, 132905), (646, 125910), (684, 118915), (765, 106324), (855, 95132), (969, 83940), (1020, 79743), (1140, 71349), (1292, 62955), (1399, 58140), (1530, 53162), (1615, 50364), (1710, 47566), (1938, 41970), (2798, 29070), (2907, 27980), (3060, 26581), (3230, 25182), (3420, 23783), (3876, 20985), (4197, 19380), (4845, 16788), (5596, 14535), (5814, 13990), (6460, 12591), (6995, 11628), (8394, 9690)]