78666640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75641}}^1$

素因数の和:75667

約数の個数: 40

約数和(自身を含む): 196971768

約数和(自身を除く): 118305128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 75641, 151282, 302564, 378205, 605128, 756410, 983333, 1210256, 1512820, 1966666, 3025640, 3933332, 4916665, 6051280, 7866664, 9833330, 15733328, 19666660, 39333320, 78666640]

約数ペア:

[(1, 78666640), (2, 39333320), (4, 19666660), (5, 15733328), (8, 9833330), (10, 7866664), (13, 6051280), (16, 4916665), (20, 3933332), (26, 3025640), (40, 1966666), (52, 1512820), (65, 1210256), (80, 983333), (104, 756410), (130, 605128), (208, 378205), (260, 302564), (520, 151282), (1040, 75641)]