18662715

素因数分解:

$3^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{647}}^1$

素因数の和:1299

約数の個数: 24

約数和(自身を含む): 32449248

約数和(自身を除く): 13786533

約数列:

[1, 3, 5, 9, 15, 45, 641, 647, 1923, 1941, 3205, 3235, 5769, 5823, 9615, 9705, 28845, 29115, 414727, 1244181, 2073635, 3732543, 6220905, 18662715]

約数ペア:

[(1, 18662715), (3, 6220905), (5, 3732543), (9, 2073635), (15, 1244181), (45, 414727), (641, 29115), (647, 28845), (1923, 9705), (1941, 9615), (3205, 5823), (3235, 5769)]