393750025

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{221831}}^1$

素因数の和:221912

約数の個数: 12

約数和(自身を含む): 495129024

約数和(自身を除く): 101378999

約数列:

[1, 5, 25, 71, 355, 1775, 221831, 1109155, 5545775, 15750001, 78750005, 393750025]

約数ペア:

[(1, 393750025), (5, 78750005), (25, 15750001), (71, 5545775), (355, 1109155), (1775, 221831)]