20495925

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1283}}^1$

素因数の和:1370

約数の個数: 36

約数和(自身を含む): 37256544

約数和(自身を除く): 16760619

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1283, 1775, 3195, 3849, 5325, 6415, 11547, 15975, 19245, 32075, 57735, 91093, 96225, 273279, 288675, 455465, 819837, 1366395, 2277325, 4099185, 6831975, 20495925]

約数ペア:

[(1, 20495925), (3, 6831975), (5, 4099185), (9, 2277325), (15, 1366395), (25, 819837), (45, 455465), (71, 288675), (75, 273279), (213, 96225), (225, 91093), (355, 57735), (639, 32075), (1065, 19245), (1283, 15975), (1775, 11547), (3195, 6415), (3849, 5325)]