388950020

素因数分解:

$2^2\times 5^1\times {\mathrm{1723}}^1\times {\mathrm{11287}}^1$

素因数の和:13019

約数の個数: 24

約数和(自身を含む): 817341504

約数和(自身を除く): 428391484

約数列:

[1, 2, 4, 5, 10, 20, 1723, 3446, 6892, 8615, 11287, 17230, 22574, 34460, 45148, 56435, 112870, 225740, 19447501, 38895002, 77790004, 97237505, 194475010, 388950020]

約数ペア:

[(1, 388950020), (2, 194475010), (4, 97237505), (5, 77790004), (10, 38895002), (20, 19447501), (1723, 225740), (3446, 112870), (6892, 56435), (8615, 45148), (11287, 34460), (17230, 22574)]