20778811216

素因数分解:

$2^4\times {\mathrm{439}}^1\times {\mathrm{2958259}}^1$

素因数の和:2958706

約数の個数: 20

約数和(自身を含む): 40350666400

約数和(自身を除く): 19571855184

約数列:

[1, 2, 4, 8, 16, 439, 878, 1756, 3512, 7024, 2958259, 5916518, 11833036, 23666072, 47332144, 1298675701, 2597351402, 5194702804, 10389405608, 20778811216]

約数ペア:

[(1, 20778811216), (2, 10389405608), (4, 5194702804), (8, 2597351402), (16, 1298675701), (439, 47332144), (878, 23666072), (1756, 11833036), (3512, 5916518), (7024, 2958259)]