638987574

素因数分解:

$2^1\times 3^1\times {\mathrm{20359}}^1\times {\mathrm{5231}}^1$

素因数の和:25595

約数の個数: 16

約数和(自身を含む): 1278282240

約数和(自身を除く): 639294666

約数列:

[1, 2, 3, 6, 5231, 10462, 15693, 20359, 31386, 40718, 61077, 122154, 106497929, 212995858, 319493787, 638987574]

約数ペア:

[(1, 638987574), (2, 319493787), (3, 212995858), (6, 106497929), (5231, 122154), (10462, 61077), (15693, 40718), (20359, 31386)]