19418905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{797}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 25510464

約数和(自身を除く): 6091559

約数列:

[1, 5, 11, 55, 443, 797, 2215, 3985, 4873, 8767, 24365, 43835, 353071, 1765355, 3883781, 19418905]

約数ペア:

[(1, 19418905), (5, 3883781), (11, 1765355), (55, 353071), (443, 43835), (797, 24365), (2215, 8767), (3985, 4873)]