21902853

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{4027}}^1$

素因数の和:4081

約数の個数: 24

約数和(自身を含む): 34898592

約数和(自身を除く): 12995739

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 4027, 5439, 12081, 28189, 84567, 148999, 197323, 446997, 591969, 1042993, 3128979, 7300951, 21902853]

約数ペア:

[(1, 21902853), (3, 7300951), (7, 3128979), (21, 1042993), (37, 591969), (49, 446997), (111, 197323), (147, 148999), (259, 84567), (777, 28189), (1813, 12081), (4027, 5439)]