251017475

素因数分解:

$5^2\times {\mathrm{29}}^2\times {\mathrm{11939}}^1$

素因数の和:12007

約数の個数: 18

約数和(自身を含む): 322391940

約数和(自身を除く): 71374465

約数列:

[1, 5, 25, 29, 145, 725, 841, 4205, 11939, 21025, 59695, 298475, 346231, 1731155, 8655775, 10040699, 50203495, 251017475]

約数ペア:

[(1, 251017475), (5, 50203495), (25, 10040699), (29, 8655775), (145, 1731155), (725, 346231), (841, 298475), (4205, 59695), (11939, 21025)]