20831960

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3449}}^1$

素因数の和:3611

約数の個数: 32

約数和(自身を含む): 47196000

約数和(自身を除く): 26364040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3449, 6040, 6898, 13796, 17245, 27592, 34490, 68980, 137960, 520799, 1041598, 2083196, 2603995, 4166392, 5207990, 10415980, 20831960]

約数ペア:

[(1, 20831960), (2, 10415980), (4, 5207990), (5, 4166392), (8, 2603995), (10, 2083196), (20, 1041598), (40, 520799), (151, 137960), (302, 68980), (604, 34490), (755, 27592), (1208, 17245), (1510, 13796), (3020, 6898), (3449, 6040)]