21572116

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18661}}^1$

素因数の和:18699

約数の個数: 18

約数和(自身を含む): 40104638

約数和(自身を除く): 18532522

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18661, 37322, 74644, 317237, 634474, 1268948, 5393029, 10786058, 21572116]

約数ペア:

[(1, 21572116), (2, 10786058), (4, 5393029), (17, 1268948), (34, 634474), (68, 317237), (289, 74644), (578, 37322), (1156, 18661)]