20138620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23417}}^1$

素因数の和:23469

約数の個数: 24

約数和(自身を含む): 43276464

約数和(自身を除く): 23137844

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23417, 46834, 93668, 117085, 234170, 468340, 1006931, 2013862, 4027724, 5034655, 10069310, 20138620]

約数ペア:

[(1, 20138620), (2, 10069310), (4, 5034655), (5, 4027724), (10, 2013862), (20, 1006931), (43, 468340), (86, 234170), (172, 117085), (215, 93668), (430, 46834), (860, 23417)]