19942020

素因数分解:

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

素因数の和:72

約数の個数: 288

約数和(自身を含む): 78624000

約数和(自身を除く): 58681980

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, 49, 51, 57, 60, 63, 68, 70, 76, 84, 85, 90, 95, 98, 102, 105, 114, 119, 126, 133, 140, 147, 153, 170, 171, 180, 190, 196, 204, 210, 228, 238, 245, 252, 255, 266, 285, 294, 306, 315, 323, 340, 342, 343, 357, 380, 399, 420, 441, 476, 490, 510, 532, 570, 588, 595, 612, 630, 646, 665, 684, 686, 714, 735, 765, 798, 833, 855, 882, 931, 969, 980, 1020, 1029, 1071, 1140, 1190, 1197, 1260, 1292, 1330, 1372, 1428, 1470, 1530, 1596, 1615, 1666, 1710, 1715, 1764, 1785, 1862, 1938, 1995, 2058, 2142, 2205, 2261, 2380, 2394, 2499, 2660, 2793, 2907, 2940, 3060, 3087, 3230, 3332, 3420, 3430, 3570, 3724, 3876, 3990, 4116, 4165, 4284, 4410, 4522, 4655, 4788, 4845, 4998, 5145, 5355, 5586, 5814, 5831, 5985, 6174, 6460, 6517, 6783, 6860, 7140, 7497, 7980, 8330, 8379, 8820, 9044, 9310, 9690, 9996, 10290, 10710, 11172, 11305, 11628, 11662, 11970, 12348, 12495, 13034, 13566, 13965, 14535, 14994, 15435, 15827, 16660, 16758, 17493, 18620, 19380, 19551, 20349, 20580, 21420, 22610, 23324, 23940, 24990, 26068, 27132, 27930, 29070, 29155, 29988, 30870, 31654, 32585, 33516, 33915, 34986, 37485, 39102, 40698, 41895, 45220, 47481, 49980, 52479, 55860, 58140, 58310, 58653, 61740, 63308, 65170, 67830, 69972, 74970, 78204, 79135, 81396, 83790, 87465, 94962, 97755, 101745, 104958, 110789, 116620, 117306, 130340, 135660, 142443, 149940, 158270, 167580, 174930, 189924, 195510, 203490, 209916, 221578, 234612, 237405, 262395, 284886, 293265, 316540, 332367, 349860, 391020, 406980, 443156, 474810, 524790, 553945, 569772, 586530, 664734, 712215, 949620, 997101, 1049580, 1107890, 1173060, 1329468, 1424430, 1661835, 1994202, 2215780, 2848860, 3323670, 3988404, 4985505, 6647340, 9971010, 19942020]

約数ペア:

[(1, 19942020), (2, 9971010), (3, 6647340), (4, 4985505), (5, 3988404), (6, 3323670), (7, 2848860), (9, 2215780), (10, 1994202), (12, 1661835), (14, 1424430), (15, 1329468), (17, 1173060), (18, 1107890), (19, 1049580), (20, 997101), (21, 949620), (28, 712215), (30, 664734), (34, 586530), (35, 569772), (36, 553945), (38, 524790), (42, 474810), (45, 443156), (49, 406980), (51, 391020), (57, 349860), (60, 332367), (63, 316540), (68, 293265), (70, 284886), (76, 262395), (84, 237405), (85, 234612), (90, 221578), (95, 209916), (98, 203490), (102, 195510), (105, 189924), (114, 174930), (119, 167580), (126, 158270), (133, 149940), (140, 142443), (147, 135660), (153, 130340), (170, 117306), (171, 116620), (180, 110789), (190, 104958), (196, 101745), (204, 97755), (210, 94962), (228, 87465), (238, 83790), (245, 81396), (252, 79135), (255, 78204), (266, 74970), (285, 69972), (294, 67830), (306, 65170), (315, 63308), (323, 61740), (340, 58653), (342, 58310), (343, 58140), (357, 55860), (380, 52479), (399, 49980), (420, 47481), (441, 45220), (476, 41895), (490, 40698), (510, 39102), (532, 37485), (570, 34986), (588, 33915), (595, 33516), (612, 32585), (630, 31654), (646, 30870), (665, 29988), (684, 29155), (686, 29070), (714, 27930), (735, 27132), (765, 26068), (798, 24990), (833, 23940), (855, 23324), (882, 22610), (931, 21420), (969, 20580), (980, 20349), (1020, 19551), (1029, 19380), (1071, 18620), (1140, 17493), (1190, 16758), (1197, 16660), (1260, 15827), (1292, 15435), (1330, 14994), (1372, 14535), (1428, 13965), (1470, 13566), (1530, 13034), (1596, 12495), (1615, 12348), (1666, 11970), (1710, 11662), (1715, 11628), (1764, 11305), (1785, 11172), (1862, 10710), (1938, 10290), (1995, 9996), (2058, 9690), (2142, 9310), (2205, 9044), (2261, 8820), (2380, 8379), (2394, 8330), (2499, 7980), (2660, 7497), (2793, 7140), (2907, 6860), (2940, 6783), (3060, 6517), (3087, 6460), (3230, 6174), (3332, 5985), (3420, 5831), (3430, 5814), (3570, 5586), (3724, 5355), (3876, 5145), (3990, 4998), (4116, 4845), (4165, 4788), (4284, 4655), (4410, 4522)]