256842620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{70951}}^1$

素因数の和:71141

約数の個数: 24

約数和(自身を含む): 542357088

約数和(自身を除く): 285514468

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 70951, 141902, 283804, 354755, 709510, 1419020, 12842131, 25684262, 51368524, 64210655, 128421310, 256842620]

約数ペア:

[(1, 256842620), (2, 128421310), (4, 64210655), (5, 51368524), (10, 25684262), (20, 12842131), (181, 1419020), (362, 709510), (724, 354755), (905, 283804), (1810, 141902), (3620, 70951)]