21707973

素因数分解:

$3^3\times 7^1\times {\mathrm{331}}^1\times {\mathrm{347}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 36971520

約数和(自身を除く): 15263547

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 331, 347, 993, 1041, 2317, 2429, 2979, 3123, 6951, 7287, 8937, 9369, 20853, 21861, 62559, 65583, 114857, 344571, 803999, 1033713, 2411997, 3101139, 7235991, 21707973]

約数ペア:

[(1, 21707973), (3, 7235991), (7, 3101139), (9, 2411997), (21, 1033713), (27, 803999), (63, 344571), (189, 114857), (331, 65583), (347, 62559), (993, 21861), (1041, 20853), (2317, 9369), (2429, 8937), (2979, 7287), (3123, 6951)]