21163149

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1297}}^1$

素因数の和:1354

約数の個数: 36

約数和(自身を含む): 36549084

約数和(自身を除く): 15385935

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 259, 333, 441, 777, 1297, 1813, 2331, 3891, 5439, 9079, 11673, 16317, 27237, 47989, 63553, 81711, 143967, 190659, 335923, 431901, 571977, 1007769, 2351461, 3023307, 7054383, 21163149]

約数ペア:

[(1, 21163149), (3, 7054383), (7, 3023307), (9, 2351461), (21, 1007769), (37, 571977), (49, 431901), (63, 335923), (111, 190659), (147, 143967), (259, 81711), (333, 63553), (441, 47989), (777, 27237), (1297, 16317), (1813, 11673), (2331, 9079), (3891, 5439)]