20555380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60457}}^1$

素因数の和:60483

約数の個数: 24

約数和(自身を含む): 45706248

約数和(自身を除く): 25150868

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60457, 120914, 241828, 302285, 604570, 1027769, 1209140, 2055538, 4111076, 5138845, 10277690, 20555380]

約数ペア:

[(1, 20555380), (2, 10277690), (4, 5138845), (5, 4111076), (10, 2055538), (17, 1209140), (20, 1027769), (34, 604570), (68, 302285), (85, 241828), (170, 120914), (340, 60457)]