20395389

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13679}}^1$

素因数の和:13760

約数の個数: 16

約数和(自身を含む): 31518720

約数和(自身を除く): 11123331

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13679, 41037, 95753, 287259, 971209, 2913627, 6798463, 20395389]

約数ペア:

[(1, 20395389), (3, 6798463), (7, 2913627), (21, 971209), (71, 287259), (213, 95753), (497, 41037), (1491, 13679)]