20578415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1693}}^1$

素因数の和:1739

約数の個数: 32

約数和(自身を含む): 30735936

約数和(自身を除く): 10157521

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 1693, 2431, 8465, 12155, 18623, 22009, 28781, 93115, 110045, 143905, 242099, 316591, 374153, 1210495, 1582955, 1870765, 4115683, 20578415]

約数ペア:

[(1, 20578415), (5, 4115683), (11, 1870765), (13, 1582955), (17, 1210495), (55, 374153), (65, 316591), (85, 242099), (143, 143905), (187, 110045), (221, 93115), (715, 28781), (935, 22009), (1105, 18623), (1693, 12155), (2431, 8465)]