20988435

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2909}}^1$

素因数の和:2967

約数の個数: 32

約数和(自身を含む): 37154880

約数和(自身を除く): 16166445

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2909, 7215, 8727, 14545, 37817, 43635, 107633, 113451, 189085, 322899, 538165, 567255, 1399229, 1614495, 4197687, 6996145, 20988435]

約数ペア:

[(1, 20988435), (3, 6996145), (5, 4197687), (13, 1614495), (15, 1399229), (37, 567255), (39, 538165), (65, 322899), (111, 189085), (185, 113451), (195, 107633), (481, 43635), (555, 37817), (1443, 14545), (2405, 8727), (2909, 7215)]