20995395

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{757}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 34437456

約数和(自身を除く): 13442061

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 757, 1849, 2271, 3785, 5547, 9245, 11355, 27735, 32551, 97653, 162755, 488265, 1399693, 4199079, 6998465, 20995395]

約数ペア:

[(1, 20995395), (3, 6998465), (5, 4199079), (15, 1399693), (43, 488265), (129, 162755), (215, 97653), (645, 32551), (757, 27735), (1849, 11355), (2271, 9245), (3785, 5547)]