20495260

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8069}}^1$

素因数の和:8205

約数の個数: 24

約数和(自身を含む): 43384320

約数和(自身を除く): 22889060

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8069, 16138, 32276, 40345, 80690, 161380, 1024763, 2049526, 4099052, 5123815, 10247630, 20495260]

約数ペア:

[(1, 20495260), (2, 10247630), (4, 5123815), (5, 4099052), (10, 2049526), (20, 1024763), (127, 161380), (254, 80690), (508, 40345), (635, 32276), (1270, 16138), (2540, 8069)]