42657220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52021}}^1$

素因数の和:52071

約数の個数: 24

約数和(自身を含む): 91766808

約数和(自身を除く): 49109588

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 52021, 104042, 208084, 260105, 520210, 1040420, 2132861, 4265722, 8531444, 10664305, 21328610, 42657220]

約数ペア:

[(1, 42657220), (2, 21328610), (4, 10664305), (5, 8531444), (10, 4265722), (20, 2132861), (41, 1040420), (82, 520210), (164, 260105), (205, 208084), (410, 104042), (820, 52021)]