21918340

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1663}}^1$

素因数の和:2331

約数の個数: 24

約数和(自身を含む): 46126080

約数和(自身を除く): 24207740

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 1663, 2636, 3295, 3326, 6590, 6652, 8315, 13180, 16630, 33260, 1095917, 2191834, 4383668, 5479585, 10959170, 21918340]

約数ペア:

[(1, 21918340), (2, 10959170), (4, 5479585), (5, 4383668), (10, 2191834), (20, 1095917), (659, 33260), (1318, 16630), (1663, 13180), (2636, 8315), (3295, 6652), (3326, 6590)]