20400953680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{79}}^1\times {\mathrm{3359}}^1$

素因数の和:3513

約数の個数: 120

約数和(自身を含む): 49646822400

約数和(自身を除く): 29245868720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 496, 620, 632, 790, 961, 1240, 1264, 1580, 1922, 2449, 2480, 3160, 3359, 3844, 4805, 4898, 6320, 6718, 7688, 9610, 9796, 12245, 13436, 15376, 16795, 19220, 19592, 24490, 26872, 33590, 38440, 39184, 48980, 53744, 67180, 75919, 76880, 97960, 104129, 134360, 151838, 195920, 208258, 265361, 268720, 303676, 379595, 416516, 520645, 530722, 607352, 759190, 833032, 1041290, 1061444, 1214704, 1326805, 1518380, 1666064, 2082580, 2122888, 2653610, 3036760, 3227999, 4165160, 4245776, 5307220, 6073520, 6455998, 8226191, 8330320, 10614440, 12911996, 16139995, 16452382, 21228880, 25823992, 32279990, 32904764, 41130955, 51647984, 64559980, 65809528, 82261910, 129119960, 131619056, 164523820, 255011921, 258239920, 329047640, 510023842, 658095280, 1020047684, 1275059605, 2040095368, 2550119210, 4080190736, 5100238420, 10200476840, 20400953680]

約数ペア:

[(1, 20400953680), (2, 10200476840), (4, 5100238420), (5, 4080190736), (8, 2550119210), (10, 2040095368), (16, 1275059605), (20, 1020047684), (31, 658095280), (40, 510023842), (62, 329047640), (79, 258239920), (80, 255011921), (124, 164523820), (155, 131619056), (158, 129119960), (248, 82261910), (310, 65809528), (316, 64559980), (395, 51647984), (496, 41130955), (620, 32904764), (632, 32279990), (790, 25823992), (961, 21228880), (1240, 16452382), (1264, 16139995), (1580, 12911996), (1922, 10614440), (2449, 8330320), (2480, 8226191), (3160, 6455998), (3359, 6073520), (3844, 5307220), (4805, 4245776), (4898, 4165160), (6320, 3227999), (6718, 3036760), (7688, 2653610), (9610, 2122888), (9796, 2082580), (12245, 1666064), (13436, 1518380), (15376, 1326805), (16795, 1214704), (19220, 1061444), (19592, 1041290), (24490, 833032), (26872, 759190), (33590, 607352), (38440, 530722), (39184, 520645), (48980, 416516), (53744, 379595), (67180, 303676), (75919, 268720), (76880, 265361), (97960, 208258), (104129, 195920), (134360, 151838)]