1991275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 2906064

約数和(自身を除く): 914789

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 275, 325, 557, 715, 2785, 3575, 6127, 7241, 13925, 30635, 36205, 79651, 153175, 181025, 398255, 1991275]

約数ペア:

[(1, 1991275), (5, 398255), (11, 181025), (13, 153175), (25, 79651), (55, 36205), (65, 30635), (143, 13925), (275, 7241), (325, 6127), (557, 3575), (715, 2785)]