21103420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3529}}^1$

素因数の和:3574

約数の個数: 48

約数和(自身を含む): 49815360

約数和(自身を除く): 28711940

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3529, 5980, 7058, 14116, 17645, 35290, 45877, 70580, 81167, 91754, 162334, 183508, 229385, 324668, 405835, 458770, 811670, 917540, 1055171, 1623340, 2110342, 4220684, 5275855, 10551710, 21103420]

約数ペア:

[(1, 21103420), (2, 10551710), (4, 5275855), (5, 4220684), (10, 2110342), (13, 1623340), (20, 1055171), (23, 917540), (26, 811670), (46, 458770), (52, 405835), (65, 324668), (92, 229385), (115, 183508), (130, 162334), (230, 91754), (260, 81167), (299, 70580), (460, 45877), (598, 35290), (1196, 17645), (1495, 14116), (2990, 7058), (3529, 5980)]