28128639

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{463}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 47038464

約数和(自身を除く): 18909825

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 263, 463, 789, 1389, 1841, 2893, 3241, 5093, 5523, 8679, 9723, 15279, 20251, 35651, 60753, 106953, 121769, 365307, 852383, 1339459, 2557149, 4018377, 9376213, 28128639]

約数ペア:

[(1, 28128639), (3, 9376213), (7, 4018377), (11, 2557149), (21, 1339459), (33, 852383), (77, 365307), (231, 121769), (263, 106953), (463, 60753), (789, 35651), (1389, 20251), (1841, 15279), (2893, 9723), (3241, 8679), (5093, 5523)]