20161375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{653}}^1$

素因数の和:700

約数の個数: 32

約数和(自身を含む): 28566720

約数和(自身を除く): 8405345

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 475, 653, 1235, 1625, 2375, 3265, 6175, 8489, 12407, 16325, 30875, 42445, 62035, 81625, 161291, 212225, 310175, 806455, 1061125, 1550875, 4032275, 20161375]

約数ペア:

[(1, 20161375), (5, 4032275), (13, 1550875), (19, 1061125), (25, 806455), (65, 310175), (95, 212225), (125, 161291), (247, 81625), (325, 62035), (475, 42445), (653, 30875), (1235, 16325), (1625, 12407), (2375, 8489), (3265, 6175)]