205103275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1543}}^1$

素因数の和:1975

約数の個数: 24

約数和(自身を含む): 274739360

約数和(自身を除く): 69636085

約数列:

[1, 5, 13, 25, 65, 325, 409, 1543, 2045, 5317, 7715, 10225, 20059, 26585, 38575, 100295, 132925, 501475, 631087, 3155435, 8204131, 15777175, 41020655, 205103275]

約数ペア:

[(1, 205103275), (5, 41020655), (13, 15777175), (25, 8204131), (65, 3155435), (325, 631087), (409, 501475), (1543, 132925), (2045, 100295), (5317, 38575), (7715, 26585), (10225, 20059)]