28991913

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{1213}}^1$

素因数の和:1504

約数の個数: 16

約数和(自身を含む): 40091136

約数和(自身を除く): 11099223

約数列:

[1, 3, 31, 93, 257, 771, 1213, 3639, 7967, 23901, 37603, 112809, 311741, 935223, 9663971, 28991913]

約数ペア:

[(1, 28991913), (3, 9663971), (31, 935223), (93, 311741), (257, 112809), (771, 37603), (1213, 23901), (3639, 7967)]