21710479

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 27209520

約数和(自身を除く): 5499041

約数列:

[1, 7, 17, 49, 67, 119, 389, 469, 833, 1139, 2723, 3283, 6613, 7973, 19061, 26063, 46291, 55811, 182441, 324037, 443071, 1277087, 3101497, 21710479]

約数ペア:

[(1, 21710479), (7, 3101497), (17, 1277087), (49, 443071), (67, 324037), (119, 182441), (389, 55811), (469, 46291), (833, 26063), (1139, 19061), (2723, 7973), (3283, 6613)]