21427847

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 26199936

約数和(自身を除く): 4772089

約数列:

[1, 7, 37, 49, 53, 223, 259, 371, 1561, 1813, 1961, 2597, 8251, 10927, 11819, 13727, 57757, 82733, 96089, 404299, 437303, 579131, 3061121, 21427847]

約数ペア:

[(1, 21427847), (7, 3061121), (37, 579131), (49, 437303), (53, 404299), (223, 96089), (259, 82733), (371, 57757), (1561, 13727), (1813, 11819), (1961, 10927), (2597, 8251)]