155012020

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{42821}}^1$

素因数の和:43011

約数の個数: 24

約数和(自身を含む): 327331368

約数和(自身を除く): 172319348

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 42821, 85642, 171284, 214105, 428210, 856420, 7750601, 15501202, 31002404, 38753005, 77506010, 155012020]

約数ペア:

[(1, 155012020), (2, 77506010), (4, 38753005), (5, 31002404), (10, 15501202), (20, 7750601), (181, 856420), (362, 428210), (724, 214105), (905, 171284), (1810, 85642), (3620, 42821)]