20815679521

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{6182263}}^1$

素因数の和:6182320

約数の個数: 16

約数和(自身を含む): 26311715584

約数和(自身を除く): 5496036063

約数列:

[1, 7, 13, 37, 91, 259, 481, 3367, 6182263, 43275841, 80369419, 228743731, 562585933, 1601206117, 2973668503, 20815679521]

約数ペア:

[(1, 20815679521), (7, 2973668503), (13, 1601206117), (37, 562585933), (91, 228743731), (259, 80369419), (481, 43275841), (3367, 6182263)]