28398890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{218453}}^1$

素因数の和:218473

約数の個数: 16

約数和(自身を含む): 55050408

約数和(自身を除く): 26651518

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 218453, 436906, 1092265, 2184530, 2839889, 5679778, 14199445, 28398890]

約数ペア:

[(1, 28398890), (2, 14199445), (5, 5679778), (10, 2839889), (13, 2184530), (26, 1092265), (65, 436906), (130, 218453)]