21169460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81421}}^1$

素因数の和:81443

約数の個数: 24

約数和(自身を含む): 47876136

約数和(自身を除く): 26706676

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 81421, 162842, 325684, 407105, 814210, 1058473, 1628420, 2116946, 4233892, 5292365, 10584730, 21169460]

約数ペア:

[(1, 21169460), (2, 10584730), (4, 5292365), (5, 4233892), (10, 2116946), (13, 1628420), (20, 1058473), (26, 814210), (52, 407105), (65, 325684), (130, 162842), (260, 81421)]