71297980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{274223}}^1$

素因数の和:274245

約数の個数: 24

約数和(自身を含む): 161243712

約数和(自身を除く): 89945732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 274223, 548446, 1096892, 1371115, 2742230, 3564899, 5484460, 7129798, 14259596, 17824495, 35648990, 71297980]

約数ペア:

[(1, 71297980), (2, 35648990), (4, 17824495), (5, 14259596), (10, 7129798), (13, 5484460), (20, 3564899), (26, 2742230), (52, 1371115), (65, 1096892), (130, 548446), (260, 274223)]