21231340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2266

約数の個数: 48

約数和(自身を含む): 49335552

約数和(自身を除く): 28104212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2207, 2405, 4414, 4810, 8828, 9620, 11035, 22070, 28691, 44140, 57382, 81659, 114764, 143455, 163318, 286910, 326636, 408295, 573820, 816590, 1061567, 1633180, 2123134, 4246268, 5307835, 10615670, 21231340]

約数ペア:

[(1, 21231340), (2, 10615670), (4, 5307835), (5, 4246268), (10, 2123134), (13, 1633180), (20, 1061567), (26, 816590), (37, 573820), (52, 408295), (65, 326636), (74, 286910), (130, 163318), (148, 143455), (185, 114764), (260, 81659), (370, 57382), (481, 44140), (740, 28691), (962, 22070), (1924, 11035), (2207, 9620), (2405, 8828), (4414, 4810)]