28157217

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{19843}}^1$

素因数の和:19900

約数の個数: 16

約数和(自身を含む): 41910528

約数和(自身を除く): 13753311

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 19843, 59529, 218273, 654819, 853249, 2559747, 9385739, 28157217]

約数ペア:

[(1, 28157217), (3, 9385739), (11, 2559747), (33, 853249), (43, 654819), (129, 218273), (473, 59529), (1419, 19843)]