20947310

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2689}}^1$

素因数の和:2756

約数の個数: 32

約数和(自身を含む): 40672800

約数和(自身を除く): 19725490

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2689, 3895, 5378, 7790, 13445, 26890, 51091, 102182, 110249, 220498, 255455, 510910, 551245, 1102490, 2094731, 4189462, 10473655, 20947310]

約数ペア:

[(1, 20947310), (2, 10473655), (5, 4189462), (10, 2094731), (19, 1102490), (38, 551245), (41, 510910), (82, 255455), (95, 220498), (190, 110249), (205, 102182), (410, 51091), (779, 26890), (1558, 13445), (2689, 7790), (3895, 5378)]