21054978

素因数分解:

$2^1\times 3^6\times 7^1\times {\mathrm{2063}}^1$

素因数の和:2090

約数の個数: 56

約数和(自身を含む): 54142848

約数和(自身を除く): 33087870

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 729, 1134, 1458, 1701, 2063, 3402, 4126, 5103, 6189, 10206, 12378, 14441, 18567, 28882, 37134, 43323, 55701, 86646, 111402, 129969, 167103, 259938, 334206, 389907, 501309, 779814, 1002618, 1169721, 1503927, 2339442, 3007854, 3509163, 7018326, 10527489, 21054978]

約数ペア:

[(1, 21054978), (2, 10527489), (3, 7018326), (6, 3509163), (7, 3007854), (9, 2339442), (14, 1503927), (18, 1169721), (21, 1002618), (27, 779814), (42, 501309), (54, 389907), (63, 334206), (81, 259938), (126, 167103), (162, 129969), (189, 111402), (243, 86646), (378, 55701), (486, 43323), (567, 37134), (729, 28882), (1134, 18567), (1458, 14441), (1701, 12378), (2063, 10206), (3402, 6189), (4126, 5103)]