20517850

素因数分解:

$2^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{8731}}^1$

素因数の和:8790

約数の個数: 24

約数和(自身を含む): 38979648

約数和(自身を除く): 18461798

約数列:

[1, 2, 5, 10, 25, 47, 50, 94, 235, 470, 1175, 2350, 8731, 17462, 43655, 87310, 218275, 410357, 436550, 820714, 2051785, 4103570, 10258925, 20517850]

約数ペア:

[(1, 20517850), (2, 10258925), (5, 4103570), (10, 2051785), (25, 820714), (47, 436550), (50, 410357), (94, 218275), (235, 87310), (470, 43655), (1175, 17462), (2350, 8731)]