25518987650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1266451}}^1$

素因数の和:1266507

約数の個数: 48

約数和(自身を含む): 52765456128

約数和(自身を除く): 27246468478

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 2015, 4030, 10075, 20150, 1266451, 2532902, 6332255, 12664510, 16463863, 31661275, 32927726, 39259981, 63322550, 78519962, 82319315, 164638630, 196299905, 392599810, 411596575, 510379753, 823193150, 981499525, 1020759506, 1962999050, 2551898765, 5103797530, 12759493825, 25518987650]

約数ペア:

[(1, 25518987650), (2, 12759493825), (5, 5103797530), (10, 2551898765), (13, 1962999050), (25, 1020759506), (26, 981499525), (31, 823193150), (50, 510379753), (62, 411596575), (65, 392599810), (130, 196299905), (155, 164638630), (310, 82319315), (325, 78519962), (403, 63322550), (650, 39259981), (775, 32927726), (806, 31661275), (1550, 16463863), (2015, 12664510), (4030, 6332255), (10075, 2532902), (20150, 1266451)]