12991940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{467}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 29719872

約数和(自身を除く): 16727932

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 467, 535, 934, 1070, 1391, 1868, 2140, 2335, 2782, 4670, 5564, 6071, 6955, 9340, 12142, 13910, 24284, 27820, 30355, 49969, 60710, 99938, 121420, 199876, 249845, 499690, 649597, 999380, 1299194, 2598388, 3247985, 6495970, 12991940]

約数ペア:

[(1, 12991940), (2, 6495970), (4, 3247985), (5, 2598388), (10, 1299194), (13, 999380), (20, 649597), (26, 499690), (52, 249845), (65, 199876), (107, 121420), (130, 99938), (214, 60710), (260, 49969), (428, 30355), (467, 27820), (535, 24284), (934, 13910), (1070, 12142), (1391, 9340), (1868, 6955), (2140, 6071), (2335, 5564), (2782, 4670)]