25399540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 55931904

約数和(自身を除く): 30532364

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 577, 620, 710, 1154, 1420, 2201, 2308, 2885, 4402, 5770, 8804, 11005, 11540, 17887, 22010, 35774, 40967, 44020, 71548, 81934, 89435, 163868, 178870, 204835, 357740, 409670, 819340, 1269977, 2539954, 5079908, 6349885, 12699770, 25399540]

約数ペア:

[(1, 25399540), (2, 12699770), (4, 6349885), (5, 5079908), (10, 2539954), (20, 1269977), (31, 819340), (62, 409670), (71, 357740), (124, 204835), (142, 178870), (155, 163868), (284, 89435), (310, 81934), (355, 71548), (577, 44020), (620, 40967), (710, 35774), (1154, 22010), (1420, 17887), (2201, 11540), (2308, 11005), (2885, 8804), (4402, 5770)]