64281920

素因数分解:

$2^6\times 5^1\times {\mathrm{200881}}^1$

素因数の和:200898

約数の個数: 28

約数和(自身を含む): 153072084

約数和(自身を除く): 88790164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 200881, 401762, 803524, 1004405, 1607048, 2008810, 3214096, 4017620, 6428192, 8035240, 12856384, 16070480, 32140960, 64281920]

約数ペア:

[(1, 64281920), (2, 32140960), (4, 16070480), (5, 12856384), (8, 8035240), (10, 6428192), (16, 4017620), (20, 3214096), (32, 2008810), (40, 1607048), (64, 1004405), (80, 803524), (160, 401762), (320, 200881)]