20921290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{160933}}^1$

素因数の和:160953

約数の個数: 16

約数和(自身を含む): 40555368

約数和(自身を除く): 19634078

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 160933, 321866, 804665, 1609330, 2092129, 4184258, 10460645, 20921290]

約数ペア:

[(1, 20921290), (2, 10460645), (5, 4184258), (10, 2092129), (13, 1609330), (26, 804665), (65, 321866), (130, 160933)]