28911911

素因数分解:

$7^2\times {\mathrm{37}}^2\times {\mathrm{431}}^1$

素因数の和:519

約数の個数: 18

約数和(自身を含む): 34645968

約数和(自身を除く): 5734057

約数列:

[1, 7, 37, 49, 259, 431, 1369, 1813, 3017, 9583, 15947, 21119, 67081, 111629, 590039, 781403, 4130273, 28911911]

約数ペア:

[(1, 28911911), (7, 4130273), (37, 781403), (49, 590039), (259, 111629), (431, 67081), (1369, 21119), (1813, 15947), (3017, 9583)]