20428655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7309}}^1$

素因数の和:7370

約数の個数: 16

約数和(自身を含む): 27017760

約数和(自身を除く): 6589105

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7309, 36545, 95017, 314287, 475085, 1571435, 4085731, 20428655]

約数ペア:

[(1, 20428655), (5, 4085731), (13, 1571435), (43, 475085), (65, 314287), (215, 95017), (559, 36545), (2795, 7309)]