20123090920

素因数分解:

$2^3\times 5^1\times {\mathrm{503077273}}^1$

素因数の和:503077284

約数の個数: 16

約数和(自身を含む): 45276954660

約数和(自身を除く): 25153863740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503077273, 1006154546, 2012309092, 2515386365, 4024618184, 5030772730, 10061545460, 20123090920]

約数ペア:

[(1, 20123090920), (2, 10061545460), (4, 5030772730), (5, 4024618184), (8, 2515386365), (10, 2012309092), (20, 1006154546), (40, 503077273)]