21512715

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29269}}^1$

素因数の和:29291

約数の個数: 24

約数和(自身を含む): 40041360

約数和(自身を除く): 18528645

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29269, 87807, 146345, 204883, 439035, 614649, 1024415, 1434181, 3073245, 4302543, 7170905, 21512715]

約数ペア:

[(1, 21512715), (3, 7170905), (5, 4302543), (7, 3073245), (15, 1434181), (21, 1024415), (35, 614649), (49, 439035), (105, 204883), (147, 146345), (245, 87807), (735, 29269)]