21559490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{487}}^1$

素因数の和:746

約数の個数: 32

約数和(自身を含む): 41109120

約数和(自身を除く): 19549630

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 233, 466, 487, 974, 1165, 2330, 2435, 4427, 4870, 8854, 9253, 18506, 22135, 44270, 46265, 92530, 113471, 226942, 567355, 1134710, 2155949, 4311898, 10779745, 21559490]

約数ペア:

[(1, 21559490), (2, 10779745), (5, 4311898), (10, 2155949), (19, 1134710), (38, 567355), (95, 226942), (190, 113471), (233, 92530), (466, 46265), (487, 44270), (974, 22135), (1165, 18506), (2330, 9253), (2435, 8854), (4427, 4870)]