21215169

素因数分解:

$3^3\times {\mathrm{367}}^1\times {\mathrm{2141}}^1$

素因数の和:2517

約数の個数: 16

約数和(自身を含む): 31530240

約数和(自身を除く): 10315071

約数列:

[1, 3, 9, 27, 367, 1101, 2141, 3303, 6423, 9909, 19269, 57807, 785747, 2357241, 7071723, 21215169]

約数ペア:

[(1, 21215169), (3, 7071723), (9, 2357241), (27, 785747), (367, 57807), (1101, 19269), (2141, 9909), (3303, 6423)]