81016910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47939}}^1$

素因数の和:47972

約数の個数: 24

約数和(自身を含む): 157914360

約数和(自身を除く): 76897450

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 47939, 95878, 239695, 479390, 623207, 1246414, 3116035, 6232070, 8101691, 16203382, 40508455, 81016910]

約数ペア:

[(1, 81016910), (2, 40508455), (5, 16203382), (10, 8101691), (13, 6232070), (26, 3116035), (65, 1246414), (130, 623207), (169, 479390), (338, 239695), (845, 95878), (1690, 47939)]