21127113

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{757}}^1$

素因数の和:1213

約数の個数: 24

約数和(自身を含む): 35001408

約数和(自身を除く): 13874295

約数列:

[1, 3, 7, 9, 21, 63, 443, 757, 1329, 2271, 3101, 3987, 5299, 6813, 9303, 15897, 27909, 47691, 335351, 1006053, 2347457, 3018159, 7042371, 21127113]

約数ペア:

[(1, 21127113), (3, 7042371), (7, 3018159), (9, 2347457), (21, 1006053), (63, 335351), (443, 47691), (757, 27909), (1329, 15897), (2271, 9303), (3101, 6813), (3987, 5299)]