19908655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5779}}^1$

素因数の和:5850

約数の個数: 16

約数和(自身を含む): 26218080

約数和(自身を除く): 6309425

約数列:

[1, 5, 13, 53, 65, 265, 689, 3445, 5779, 28895, 75127, 306287, 375635, 1531435, 3981731, 19908655]

約数ペア:

[(1, 19908655), (5, 3981731), (13, 1531435), (53, 375635), (65, 306287), (265, 75127), (689, 28895), (3445, 5779)]