71389420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{14221}}^1$

素因数の和:14481

約数の個数: 24

約数和(自身を含む): 150525648

約数和(自身を除く): 79136228

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 14221, 28442, 56884, 71105, 142210, 284420, 3569471, 7138942, 14277884, 17847355, 35694710, 71389420]

約数ペア:

[(1, 71389420), (2, 35694710), (4, 17847355), (5, 14277884), (10, 7138942), (20, 3569471), (251, 284420), (502, 142210), (1004, 71105), (1255, 56884), (2510, 28442), (5020, 14221)]