21203390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{773}}^1$

素因数の和:1004

約数の個数: 32

約数和(自身を含む): 41350176

約数和(自身を除く): 20146786

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 211, 422, 773, 1055, 1546, 2110, 2743, 3865, 5486, 7730, 10049, 13715, 20098, 27430, 50245, 100490, 163103, 326206, 815515, 1631030, 2120339, 4240678, 10601695, 21203390]

約数ペア:

[(1, 21203390), (2, 10601695), (5, 4240678), (10, 2120339), (13, 1631030), (26, 815515), (65, 326206), (130, 163103), (211, 100490), (422, 50245), (773, 27430), (1055, 20098), (1546, 13715), (2110, 10049), (2743, 7730), (3865, 5486)]