28780491275

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{3983459}}^1$

素因数の和:3983503

約数の個数: 18

約数和(自身を含む): 37910588820

約数和(自身を除く): 9130097545

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 3983459, 19917295, 67718803, 99586475, 338594015, 1151219651, 1692970075, 5756098255, 28780491275]

約数ペア:

[(1, 28780491275), (5, 5756098255), (17, 1692970075), (25, 1151219651), (85, 338594015), (289, 99586475), (425, 67718803), (1445, 19917295), (7225, 3983459)]