20815684

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{691}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 38713248

約数和(自身を除く): 17897564

約数列:

[1, 2, 4, 17, 34, 68, 443, 691, 886, 1382, 1772, 2764, 7531, 11747, 15062, 23494, 30124, 46988, 306113, 612226, 1224452, 5203921, 10407842, 20815684]

約数ペア:

[(1, 20815684), (2, 10407842), (4, 5203921), (17, 1224452), (34, 612226), (68, 306113), (443, 46988), (691, 30124), (886, 23494), (1382, 15062), (1772, 11747), (2764, 7531)]