640638546

素因数分解:

$2^1\times 3^1\times {\mathrm{127}}^1\times {\mathrm{840733}}^1$

素因数の和:840865

約数の個数: 16

約数和(自身を含む): 1291367424

約数和(自身を除く): 650728878

約数列:

[1, 2, 3, 6, 127, 254, 381, 762, 840733, 1681466, 2522199, 5044398, 106773091, 213546182, 320319273, 640638546]

約数ペア:

[(1, 640638546), (2, 320319273), (3, 213546182), (6, 106773091), (127, 5044398), (254, 2522199), (381, 1681466), (762, 840733)]