81806135

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1\times {\mathrm{409}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 99580800

約数和(自身を除く): 17774665

約数列:

[1, 5, 109, 367, 409, 545, 1835, 2045, 40003, 44581, 150103, 200015, 222905, 750515, 16361227, 81806135]

約数ペア:

[(1, 81806135), (5, 16361227), (109, 750515), (367, 222905), (409, 200015), (545, 150103), (1835, 44581), (2045, 40003)]