16820180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{64693}}^1$

素因数の和:64715

約数の個数: 24

約数和(自身を含む): 38040072

約数和(自身を除く): 21219892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 64693, 129386, 258772, 323465, 646930, 841009, 1293860, 1682018, 3364036, 4205045, 8410090, 16820180]

約数ペア:

[(1, 16820180), (2, 8410090), (4, 4205045), (5, 3364036), (10, 1682018), (13, 1293860), (20, 841009), (26, 646930), (52, 323465), (65, 258772), (130, 129386), (260, 64693)]