20781177

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{617}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 28279680

約数和(自身を除く): 7498503

約数列:

[1, 3, 103, 109, 309, 327, 617, 1851, 11227, 33681, 63551, 67253, 190653, 201759, 6927059, 20781177]

約数ペア:

[(1, 20781177), (3, 6927059), (103, 201759), (109, 190653), (309, 67253), (327, 63551), (617, 33681), (1851, 11227)]