21341860

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7789}}^1$

素因数の和:7935

約数の個数: 24

約数和(自身を含む): 45150840

約数和(自身を除く): 23808980

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7789, 15578, 31156, 38945, 77890, 155780, 1067093, 2134186, 4268372, 5335465, 10670930, 21341860]

約数ペア:

[(1, 21341860), (2, 10670930), (4, 5335465), (5, 4268372), (10, 2134186), (20, 1067093), (137, 155780), (274, 77890), (548, 38945), (685, 31156), (1370, 15578), (2740, 7789)]