199955725

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1\times {\mathrm{709}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 257517000

約数和(自身を除く): 57561275

約数列:

[1, 5, 25, 29, 145, 389, 709, 725, 1945, 3545, 9725, 11281, 17725, 20561, 56405, 102805, 275801, 282025, 514025, 1379005, 6895025, 7998229, 39991145, 199955725]

約数ペア:

[(1, 199955725), (5, 39991145), (25, 7998229), (29, 6895025), (145, 1379005), (389, 514025), (709, 282025), (725, 275801), (1945, 102805), (3545, 56405), (9725, 20561), (11281, 17725)]