20172580

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4523}}^1$

素因数の和:4755

約数の個数: 24

約数和(自身を含む): 42561792

約数和(自身を除く): 22389212

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4523, 9046, 18092, 22615, 45230, 90460, 1008629, 2017258, 4034516, 5043145, 10086290, 20172580]

約数ペア:

[(1, 20172580), (2, 10086290), (4, 5043145), (5, 4034516), (10, 2017258), (20, 1008629), (223, 90460), (446, 45230), (892, 22615), (1115, 18092), (2230, 9046), (4460, 4523)]