25207640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{10331}}^1$

素因数の和:10403

約数の個数: 32

約数和(自身を含む): 57652560

約数和(自身を除く): 32444920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 10331, 20662, 41324, 51655, 82648, 103310, 206620, 413240, 630191, 1260382, 2520764, 3150955, 5041528, 6301910, 12603820, 25207640]

約数ペア:

[(1, 25207640), (2, 12603820), (4, 6301910), (5, 5041528), (8, 3150955), (10, 2520764), (20, 1260382), (40, 630191), (61, 413240), (122, 206620), (244, 103310), (305, 82648), (488, 51655), (610, 41324), (1220, 20662), (2440, 10331)]