1640145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{647}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 2846016

約数和(自身を除く): 1205871

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 647, 845, 1941, 2535, 3235, 8411, 9705, 25233, 42055, 109343, 126165, 328029, 546715, 1640145]

約数ペア:

[(1, 1640145), (3, 546715), (5, 328029), (13, 126165), (15, 109343), (39, 42055), (65, 25233), (169, 9705), (195, 8411), (507, 3235), (647, 2535), (845, 1941)]