21122937

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:331

約数の個数: 40

約数和(自身を含む): 34871232

約数和(自身を除く): 13748295

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 151, 157, 297, 453, 471, 891, 1359, 1413, 1661, 1727, 4077, 4239, 4983, 5181, 12231, 12717, 14949, 15543, 23707, 44847, 46629, 71121, 134541, 139887, 213363, 260777, 640089, 782331, 1920267, 2346993, 7040979, 21122937]

約数ペア:

[(1, 21122937), (3, 7040979), (9, 2346993), (11, 1920267), (27, 782331), (33, 640089), (81, 260777), (99, 213363), (151, 139887), (157, 134541), (297, 71121), (453, 46629), (471, 44847), (891, 23707), (1359, 15543), (1413, 14949), (1661, 12717), (1727, 12231), (4077, 5181), (4239, 4983)]