28821947

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{7639}}^1$

素因数の和:7671

約数の個数: 16

約数和(自身を含む): 36672000

約数和(自身を除く): 7850053

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 7639, 53473, 84029, 374311, 588203, 2620177, 4117421, 28821947]

約数ペア:

[(1, 28821947), (7, 4117421), (11, 2620177), (49, 588203), (77, 374311), (343, 84029), (539, 53473), (3773, 7639)]