438045140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1684789}}^1$

素因数の和:1684811

約数の個数: 24

約数和(自身を含む): 990656520

約数和(自身を除く): 552611380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1684789, 3369578, 6739156, 8423945, 16847890, 21902257, 33695780, 43804514, 87609028, 109511285, 219022570, 438045140]

約数ペア:

[(1, 438045140), (2, 219022570), (4, 109511285), (5, 87609028), (10, 43804514), (13, 33695780), (20, 21902257), (26, 16847890), (52, 8423945), (65, 6739156), (130, 3369578), (260, 1684789)]