20471390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{967}}^1$

素因数の和:1076

約数の個数: 32

約数和(自身を含む): 38681280

約数和(自身を除く): 18209890

約数列:

[1, 2, 5, 10, 29, 58, 73, 145, 146, 290, 365, 730, 967, 1934, 2117, 4234, 4835, 9670, 10585, 21170, 28043, 56086, 70591, 140215, 141182, 280430, 352955, 705910, 2047139, 4094278, 10235695, 20471390]

約数ペア:

[(1, 20471390), (2, 10235695), (5, 4094278), (10, 2047139), (29, 705910), (58, 352955), (73, 280430), (145, 141182), (146, 140215), (290, 70591), (365, 56086), (730, 28043), (967, 21170), (1934, 10585), (2117, 9670), (4234, 4835)]