779638220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 1741824000

約数和(自身を除く): 962185780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 89, 124, 142, 155, 178, 199, 284, 310, 355, 356, 398, 445, 620, 710, 796, 890, 995, 1420, 1780, 1990, 2201, 2759, 3980, 4402, 5518, 6169, 6319, 8804, 11005, 11036, 12338, 12638, 13795, 14129, 17711, 22010, 24676, 25276, 27590, 28258, 30845, 31595, 35422, 44020, 55180, 56516, 61690, 63190, 70645, 70844, 88555, 123380, 126380, 141290, 177110, 195889, 282580, 354220, 391778, 437999, 549041, 783556, 875998, 979445, 1098082, 1257481, 1751996, 1958890, 2189995, 2196164, 2514962, 2745205, 3917780, 4379990, 5029924, 5490410, 6287405, 8759980, 10980820, 12574810, 25149620, 38981911, 77963822, 155927644, 194909555, 389819110, 779638220]

約数ペア:

[(1, 779638220), (2, 389819110), (4, 194909555), (5, 155927644), (10, 77963822), (20, 38981911), (31, 25149620), (62, 12574810), (71, 10980820), (89, 8759980), (124, 6287405), (142, 5490410), (155, 5029924), (178, 4379990), (199, 3917780), (284, 2745205), (310, 2514962), (355, 2196164), (356, 2189995), (398, 1958890), (445, 1751996), (620, 1257481), (710, 1098082), (796, 979445), (890, 875998), (995, 783556), (1420, 549041), (1780, 437999), (1990, 391778), (2201, 354220), (2759, 282580), (3980, 195889), (4402, 177110), (5518, 141290), (6169, 126380), (6319, 123380), (8804, 88555), (11005, 70844), (11036, 70645), (12338, 63190), (12638, 61690), (13795, 56516), (14129, 55180), (17711, 44020), (22010, 35422), (24676, 31595), (25276, 30845), (27590, 28258)]