20945355

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^2\times {\mathrm{277}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 34113936

約数和(自身を除く): 13168581

約数列:

[1, 3, 5, 15, 71, 213, 277, 355, 831, 1065, 1385, 4155, 5041, 15123, 19667, 25205, 59001, 75615, 98335, 295005, 1396357, 4189071, 6981785, 20945355]

約数ペア:

[(1, 20945355), (3, 6981785), (5, 4189071), (15, 1396357), (71, 295005), (213, 98335), (277, 75615), (355, 59001), (831, 25205), (1065, 19667), (1385, 15123), (4155, 5041)]