128247275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3907}}^1$

素因数の和:4031

約数の個数: 24

約数和(自身を含む): 172999344

約数和(自身を除く): 44752069

約数列:

[1, 5, 13, 25, 65, 101, 325, 505, 1313, 2525, 3907, 6565, 19535, 32825, 50791, 97675, 253955, 394607, 1269775, 1973035, 5129891, 9865175, 25649455, 128247275]

約数ペア:

[(1, 128247275), (5, 25649455), (13, 9865175), (25, 5129891), (65, 1973035), (101, 1269775), (325, 394607), (505, 253955), (1313, 97675), (2525, 50791), (3907, 32825), (6565, 19535)]