640788

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{797}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 1519392

約数和(自身を除く): 878604

約数列:

[1, 2, 3, 4, 6, 12, 67, 134, 201, 268, 402, 797, 804, 1594, 2391, 3188, 4782, 9564, 53399, 106798, 160197, 213596, 320394, 640788]

約数ペア:

[(1, 640788), (2, 320394), (3, 213596), (4, 160197), (6, 106798), (12, 53399), (67, 9564), (134, 4782), (201, 3188), (268, 2391), (402, 1594), (797, 804)]