21748639

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:171

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 4793441

約数列:

[1, 11, 23, 31, 47, 59, 253, 341, 517, 649, 713, 1081, 1357, 1457, 1829, 2773, 7843, 11891, 14927, 16027, 20119, 30503, 33511, 42067, 63779, 85963, 368621, 462737, 701569, 945593, 1977149, 21748639]

約数ペア:

[(1, 21748639), (11, 1977149), (23, 945593), (31, 701569), (47, 462737), (59, 368621), (253, 85963), (341, 63779), (517, 42067), (649, 33511), (713, 30503), (1081, 20119), (1357, 16027), (1457, 14927), (1829, 11891), (2773, 7843)]