21400419

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1607}}^1$

素因数の和:1826

約数の個数: 16

約数和(自身を含む): 29947392

約数和(自身を除く): 8546973

約数列:

[1, 3, 23, 69, 193, 579, 1607, 4439, 4821, 13317, 36961, 110883, 310151, 930453, 7133473, 21400419]

約数ペア:

[(1, 21400419), (3, 7133473), (23, 930453), (69, 310151), (193, 110883), (579, 36961), (1607, 13317), (4439, 4821)]