21365408

素因数分解:

$2^5\times {\mathrm{149}}^1\times {\mathrm{4481}}^1$

素因数の和:4640

約数の個数: 24

約数和(自身を含む): 42354900

約数和(自身を除く): 20989492

約数列:

[1, 2, 4, 8, 16, 32, 149, 298, 596, 1192, 2384, 4481, 4768, 8962, 17924, 35848, 71696, 143392, 667669, 1335338, 2670676, 5341352, 10682704, 21365408]

約数ペア:

[(1, 21365408), (2, 10682704), (4, 5341352), (8, 2670676), (16, 1335338), (32, 667669), (149, 143392), (298, 71696), (596, 35848), (1192, 17924), (2384, 8962), (4481, 4768)]