20641460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3137}}^1$

素因数の和:3200

約数の個数: 48

約数和(自身を含む): 50609664

約数和(自身を除く): 29968204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3137, 3290, 6274, 6580, 12548, 15685, 21959, 31370, 43918, 62740, 87836, 109795, 147439, 219590, 294878, 439180, 589756, 737195, 1032073, 1474390, 2064146, 2948780, 4128292, 5160365, 10320730, 20641460]

約数ペア:

[(1, 20641460), (2, 10320730), (4, 5160365), (5, 4128292), (7, 2948780), (10, 2064146), (14, 1474390), (20, 1032073), (28, 737195), (35, 589756), (47, 439180), (70, 294878), (94, 219590), (140, 147439), (188, 109795), (235, 87836), (329, 62740), (470, 43918), (658, 31370), (940, 21959), (1316, 15685), (1645, 12548), (3137, 6580), (3290, 6274)]