21065691

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{1097}}^1$

素因数の和:1310

約数の個数: 16

約数和(自身を含む): 29039904

約数和(自身を除く): 7974213

約数列:

[1, 3, 37, 111, 173, 519, 1097, 3291, 6401, 19203, 40589, 121767, 189781, 569343, 7021897, 21065691]

約数ペア:

[(1, 21065691), (3, 7021897), (37, 569343), (111, 189781), (173, 121767), (519, 40589), (1097, 19203), (3291, 6401)]