20561636

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{4957}}^1$

素因数の和:5039

約数の個数: 24

約数和(自身を含む): 38731896

約数和(自身を除く): 18170260

約数列:

[1, 2, 4, 17, 34, 61, 68, 122, 244, 1037, 2074, 4148, 4957, 9914, 19828, 84269, 168538, 302377, 337076, 604754, 1209508, 5140409, 10280818, 20561636]

約数ペア:

[(1, 20561636), (2, 10280818), (4, 5140409), (17, 1209508), (34, 604754), (61, 337076), (68, 302377), (122, 168538), (244, 84269), (1037, 19828), (2074, 9914), (4148, 4957)]