21293936

素因数分解:

$2^4\times {\mathrm{1009}}^1\times {\mathrm{1319}}^1$

素因数の和:2336

約数の個数: 20

約数和(自身を含む): 41329200

約数和(自身を除く): 20035264

約数列:

[1, 2, 4, 8, 16, 1009, 1319, 2018, 2638, 4036, 5276, 8072, 10552, 16144, 21104, 1330871, 2661742, 5323484, 10646968, 21293936]

約数ペア:

[(1, 21293936), (2, 10646968), (4, 5323484), (8, 2661742), (16, 1330871), (1009, 21104), (1319, 16144), (2018, 10552), (2638, 8072), (4036, 5276)]