31391145

素因数分解:

$3^4\times 5^1\times {\mathrm{77509}}^1$

素因数の和:77526

約数の個数: 20

約数和(自身を含む): 56272260

約数和(自身を除く): 24881115

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 77509, 232527, 387545, 697581, 1162635, 2092743, 3487905, 6278229, 10463715, 31391145]

約数ペア:

[(1, 31391145), (3, 10463715), (5, 6278229), (9, 3487905), (15, 2092743), (27, 1162635), (45, 697581), (81, 387545), (135, 232527), (405, 77509)]