20187475

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10487}}^1$

素因数の和:10515

約数の個数: 24

約数和(自身を含む): 31212288

約数和(自身を除く): 11024813

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 10487, 52435, 73409, 115357, 262175, 367045, 576785, 807499, 1835225, 2883925, 4037495, 20187475]

約数ペア:

[(1, 20187475), (5, 4037495), (7, 2883925), (11, 1835225), (25, 807499), (35, 576785), (55, 367045), (77, 262175), (175, 115357), (275, 73409), (385, 52435), (1925, 10487)]