20561330

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1531}}^1$

素因数の和:1634

約数の個数: 32

約数和(自身を含む): 39709440

約数和(自身を除く): 19148110

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1531, 2686, 3062, 6715, 7655, 13430, 15310, 26027, 52054, 120949, 130135, 241898, 260270, 604745, 1209490, 2056133, 4112266, 10280665, 20561330]

約数ペア:

[(1, 20561330), (2, 10280665), (5, 4112266), (10, 2056133), (17, 1209490), (34, 604745), (79, 260270), (85, 241898), (158, 130135), (170, 120949), (395, 52054), (790, 26027), (1343, 15310), (1531, 13430), (2686, 7655), (3062, 6715)]