8631640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6961}}^1$

素因数の和:7003

約数の個数: 32

約数和(自身を含む): 20050560

約数和(自身を除く): 11418920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 6961, 13922, 27844, 34805, 55688, 69610, 139220, 215791, 278440, 431582, 863164, 1078955, 1726328, 2157910, 4315820, 8631640]

約数ペア:

[(1, 8631640), (2, 4315820), (4, 2157910), (5, 1726328), (8, 1078955), (10, 863164), (20, 431582), (31, 278440), (40, 215791), (62, 139220), (124, 69610), (155, 55688), (248, 34805), (310, 27844), (620, 13922), (1240, 6961)]