20948920

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2287}}^1$

素因数の和:2527

約数の個数: 32

約数和(自身を含む): 47361600

約数和(自身を除く): 26412680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2287, 2290, 4574, 4580, 9148, 9160, 11435, 18296, 22870, 45740, 91480, 523723, 1047446, 2094892, 2618615, 4189784, 5237230, 10474460, 20948920]

約数ペア:

[(1, 20948920), (2, 10474460), (4, 5237230), (5, 4189784), (8, 2618615), (10, 2094892), (20, 1047446), (40, 523723), (229, 91480), (458, 45740), (916, 22870), (1145, 18296), (1832, 11435), (2287, 9160), (2290, 9148), (4574, 4580)]