21227921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{601}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 26439840

約数和(自身を除く): 5211919

約数列:

[1, 11, 13, 19, 143, 169, 209, 247, 601, 1859, 2717, 3211, 6611, 7813, 11419, 35321, 85943, 101569, 125609, 148447, 1117259, 1632917, 1929811, 21227921]

約数ペア:

[(1, 21227921), (11, 1929811), (13, 1632917), (19, 1117259), (143, 148447), (169, 125609), (209, 101569), (247, 85943), (601, 35321), (1859, 11419), (2717, 7813), (3211, 6611)]