21133138

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{7457}}^1$

素因数の和:7581

約数の個数: 16

約数和(自身を含む): 34455960

約数和(自身を除く): 13322822

約数列:

[1, 2, 13, 26, 109, 218, 1417, 2834, 7457, 14914, 96941, 193882, 812813, 1625626, 10566569, 21133138]

約数ペア:

[(1, 21133138), (2, 10566569), (13, 1625626), (26, 812813), (109, 193882), (218, 96941), (1417, 14914), (2834, 7457)]