821732980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{5387}}^1$

素因数の和:5688

約数の個数: 48

約数和(自身を含む): 1792264320

約数和(自身を除く): 970531340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 263, 290, 526, 580, 1052, 1315, 2630, 5260, 5387, 7627, 10774, 15254, 21548, 26935, 30508, 38135, 53870, 76270, 107740, 152540, 156223, 312446, 624892, 781115, 1416781, 1562230, 2833562, 3124460, 5667124, 7083905, 14167810, 28335620, 41086649, 82173298, 164346596, 205433245, 410866490, 821732980]

約数ペア:

[(1, 821732980), (2, 410866490), (4, 205433245), (5, 164346596), (10, 82173298), (20, 41086649), (29, 28335620), (58, 14167810), (116, 7083905), (145, 5667124), (263, 3124460), (290, 2833562), (526, 1562230), (580, 1416781), (1052, 781115), (1315, 624892), (2630, 312446), (5260, 156223), (5387, 152540), (7627, 107740), (10774, 76270), (15254, 53870), (21548, 38135), (26935, 30508)]