21199490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{521}}^1$

素因数の和:854

約数の個数: 32

約数和(自身を含む): 41304816

約数和(自身を除く): 20105326

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 313, 521, 626, 1042, 1565, 2605, 3130, 4069, 5210, 6773, 8138, 13546, 20345, 33865, 40690, 67730, 163073, 326146, 815365, 1630730, 2119949, 4239898, 10599745, 21199490]

約数ペア:

[(1, 21199490), (2, 10599745), (5, 4239898), (10, 2119949), (13, 1630730), (26, 815365), (65, 326146), (130, 163073), (313, 67730), (521, 40690), (626, 33865), (1042, 20345), (1565, 13546), (2605, 8138), (3130, 6773), (4069, 5210)]