72861815

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^2\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 36

約数和(自身を含む): 99579816

約数和(自身を除く): 26718001

約数列:

[1, 5, 13, 23, 65, 115, 163, 169, 299, 529, 815, 845, 1495, 2119, 2645, 3749, 3887, 6877, 10595, 18745, 19435, 27547, 34385, 48737, 86227, 89401, 137735, 243685, 431135, 447005, 633581, 1120951, 3167905, 5604755, 14572363, 72861815]

約数ペア:

[(1, 72861815), (5, 14572363), (13, 5604755), (23, 3167905), (65, 1120951), (115, 633581), (163, 447005), (169, 431135), (299, 243685), (529, 137735), (815, 89401), (845, 86227), (1495, 48737), (2119, 34385), (2645, 27547), (3749, 19435), (3887, 18745), (6877, 10595)]