387633020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{272981}}^1$

素因数の和:273061

約数の個数: 24

約数和(自身を含む): 825497568

約数和(自身を除く): 437864548

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 272981, 545962, 1091924, 1364905, 2729810, 5459620, 19381651, 38763302, 77526604, 96908255, 193816510, 387633020]

約数ペア:

[(1, 387633020), (2, 193816510), (4, 96908255), (5, 77526604), (10, 38763302), (20, 19381651), (71, 5459620), (142, 2729810), (284, 1364905), (355, 1091924), (710, 545962), (1420, 272981)]