257003630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1\times {\mathrm{2861}}^1$

素因数の和:3572

約数の個数: 32

約数和(自身を含む): 499087008

約数和(自身を除く): 242083378

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 691, 1382, 2861, 3455, 5722, 6910, 8983, 14305, 17966, 28610, 37193, 44915, 74386, 89830, 185965, 371930, 1976951, 3953902, 9884755, 19769510, 25700363, 51400726, 128501815, 257003630]

約数ペア:

[(1, 257003630), (2, 128501815), (5, 51400726), (10, 25700363), (13, 19769510), (26, 9884755), (65, 3953902), (130, 1976951), (691, 371930), (1382, 185965), (2861, 89830), (3455, 74386), (5722, 44915), (6910, 37193), (8983, 28610), (14305, 17966)]