21074715

素因数分解:

$3^3\times 5^1\times {\mathrm{156109}}^1$

素因数の和:156123

約数の個数: 16

約数和(自身を含む): 37466400

約数和(自身を除く): 16391685

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156109, 468327, 780545, 1404981, 2341635, 4214943, 7024905, 21074715]

約数ペア:

[(1, 21074715), (3, 7024905), (5, 4214943), (9, 2341635), (15, 1404981), (27, 780545), (45, 468327), (135, 156109)]