21275240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75983}}^1$

素因数の和:76001

約数の個数: 32

約数和(自身を含む): 54708480

約数和(自身を除く): 33433240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75983, 151966, 303932, 379915, 531881, 607864, 759830, 1063762, 1519660, 2127524, 2659405, 3039320, 4255048, 5318810, 10637620, 21275240]

約数ペア:

[(1, 21275240), (2, 10637620), (4, 5318810), (5, 4255048), (7, 3039320), (8, 2659405), (10, 2127524), (14, 1519660), (20, 1063762), (28, 759830), (35, 607864), (40, 531881), (56, 379915), (70, 303932), (140, 151966), (280, 75983)]