20009306875

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{780851}}^1$

素因数の和:780912

約数の個数: 20

約数和(自身を含む): 25613507304

約数和(自身を除く): 5604200429

約数列:

[1, 5, 25, 41, 125, 205, 625, 1025, 5125, 25625, 780851, 3904255, 19521275, 32014891, 97606375, 160074455, 488031875, 800372275, 4001861375, 20009306875]

約数ペア:

[(1, 20009306875), (5, 4001861375), (25, 800372275), (41, 488031875), (125, 160074455), (205, 97606375), (625, 32014891), (1025, 19521275), (5125, 3904255), (25625, 780851)]