31531455

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{139}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 55833960

約数和(自身を除く): 24302505

約数列:

[1, 3, 5, 9, 15, 45, 71, 139, 213, 355, 417, 639, 695, 1065, 1251, 2085, 3195, 5041, 6255, 9869, 15123, 25205, 29607, 45369, 49345, 75615, 88821, 148035, 226845, 444105, 700699, 2102097, 3503495, 6306291, 10510485, 31531455]

約数ペア:

[(1, 31531455), (3, 10510485), (5, 6306291), (9, 3503495), (15, 2102097), (45, 700699), (71, 444105), (139, 226845), (213, 148035), (355, 88821), (417, 75615), (639, 49345), (695, 45369), (1065, 29607), (1251, 25205), (2085, 15123), (3195, 9869), (5041, 6255)]