15661520189

素因数分解:

$7^2\times {\mathrm{79}}^1\times {\mathrm{193}}^1\times {\mathrm{20963}}^1$

素因数の和:21249

約数の個数: 24

約数和(自身を含む): 18545592960

約数和(自身を除く): 2884072771

約数列:

[1, 7, 49, 79, 193, 553, 1351, 3871, 9457, 15247, 20963, 106729, 146741, 747103, 1027187, 1656077, 4045859, 11592539, 28321013, 81147773, 198247091, 319622861, 2237360027, 15661520189]

約数ペア:

[(1, 15661520189), (7, 2237360027), (49, 319622861), (79, 198247091), (193, 81147773), (553, 28321013), (1351, 11592539), (3871, 4045859), (9457, 1656077), (15247, 1027187), (20963, 747103), (106729, 146741)]