20981416

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 19246424

約数列:

[1, 2, 4, 8, 107, 127, 193, 214, 254, 386, 428, 508, 772, 856, 1016, 1544, 13589, 20651, 24511, 27178, 41302, 49022, 54356, 82604, 98044, 108712, 165208, 196088, 2622677, 5245354, 10490708, 20981416]

約数ペア:

[(1, 20981416), (2, 10490708), (4, 5245354), (8, 2622677), (107, 196088), (127, 165208), (193, 108712), (214, 98044), (254, 82604), (386, 54356), (428, 49022), (508, 41302), (772, 27178), (856, 24511), (1016, 20651), (1544, 13589)]