21108424

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155209}}^1$

素因数の和:155232

約数の個数: 16

約数和(自身を含む): 41906700

約数和(自身を除く): 20798276

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155209, 310418, 620836, 1241672, 2638553, 5277106, 10554212, 21108424]

約数ペア:

[(1, 21108424), (2, 10554212), (4, 5277106), (8, 2638553), (17, 1241672), (34, 620836), (68, 310418), (136, 155209)]