1207788125

素因数分解:

$5^4\times {\mathrm{109}}^1\times {\mathrm{17729}}^1$

素因数の和:17858

約数の個数: 20

約数和(自身を含む): 1523184300

約数和(自身を除く): 315396175

約数列:

[1, 5, 25, 109, 125, 545, 625, 2725, 13625, 17729, 68125, 88645, 443225, 1932461, 2216125, 9662305, 11080625, 48311525, 241557625, 1207788125]

約数ペア:

[(1, 1207788125), (5, 241557625), (25, 48311525), (109, 11080625), (125, 9662305), (545, 2216125), (625, 1932461), (2725, 443225), (13625, 88645), (17729, 68125)]