19780876

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{113}}^1\times {\mathrm{409}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 35335440

約数和(自身を除く): 15554564

約数列:

[1, 2, 4, 107, 113, 214, 226, 409, 428, 452, 818, 1636, 12091, 24182, 43763, 46217, 48364, 87526, 92434, 175052, 184868, 4945219, 9890438, 19780876]

約数ペア:

[(1, 19780876), (2, 9890438), (4, 4945219), (107, 184868), (113, 175052), (214, 92434), (226, 87526), (409, 48364), (428, 46217), (452, 43763), (818, 24182), (1636, 12091)]