20450375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:272

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7854265

約数列:

[1, 5, 11, 25, 55, 107, 125, 139, 275, 535, 695, 1177, 1375, 1529, 2675, 3475, 5885, 7645, 13375, 14873, 17375, 29425, 38225, 74365, 147125, 163603, 191125, 371825, 818015, 1859125, 4090075, 20450375]

約数ペア:

[(1, 20450375), (5, 4090075), (11, 1859125), (25, 818015), (55, 371825), (107, 191125), (125, 163603), (139, 147125), (275, 74365), (535, 38225), (695, 29425), (1177, 17375), (1375, 14873), (1529, 13375), (2675, 7645), (3475, 5885)]