20728386

素因数分解:

$2^1\times 3^7\times 7^1\times {\mathrm{677}}^1$

素因数の和:707

約数の個数: 64

約数和(自身を含む): 53372160

約数和(自身を除く): 32643774

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 677, 729, 1134, 1354, 1458, 1701, 2031, 2187, 3402, 4062, 4374, 4739, 5103, 6093, 9478, 10206, 12186, 14217, 15309, 18279, 28434, 30618, 36558, 42651, 54837, 85302, 109674, 127953, 164511, 255906, 329022, 383859, 493533, 767718, 987066, 1151577, 1480599, 2303154, 2961198, 3454731, 6909462, 10364193, 20728386]

約数ペア:

[(1, 20728386), (2, 10364193), (3, 6909462), (6, 3454731), (7, 2961198), (9, 2303154), (14, 1480599), (18, 1151577), (21, 987066), (27, 767718), (42, 493533), (54, 383859), (63, 329022), (81, 255906), (126, 164511), (162, 127953), (189, 109674), (243, 85302), (378, 54837), (486, 42651), (567, 36558), (677, 30618), (729, 28434), (1134, 18279), (1354, 15309), (1458, 14217), (1701, 12186), (2031, 10206), (2187, 9478), (3402, 6093), (4062, 5103), (4374, 4739)]