21803859

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 39896064

約数和(自身を除く): 18092205

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 73, 77, 99, 219, 231, 431, 511, 657, 693, 803, 1293, 1533, 2409, 3017, 3879, 4599, 4741, 5621, 7227, 9051, 14223, 16863, 27153, 31463, 33187, 42669, 50589, 94389, 99561, 220241, 283167, 298683, 346093, 660723, 1038279, 1982169, 2422651, 3114837, 7267953, 21803859]

約数ペア:

[(1, 21803859), (3, 7267953), (7, 3114837), (9, 2422651), (11, 1982169), (21, 1038279), (33, 660723), (63, 346093), (73, 298683), (77, 283167), (99, 220241), (219, 99561), (231, 94389), (431, 50589), (511, 42669), (657, 33187), (693, 31463), (803, 27153), (1293, 16863), (1533, 14223), (2409, 9051), (3017, 7227), (3879, 5621), (4599, 4741)]