20781921381

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{167}}^1\times {\mathrm{2383}}^1$

素因数の和:2682

約数の個数: 48

約数和(自身を含む): 30490177536

約数和(自身を除く): 9708256155

約数列:

[1, 3, 13, 39, 103, 167, 169, 309, 501, 507, 1339, 2171, 2383, 4017, 6513, 7149, 17201, 17407, 28223, 30979, 51603, 52221, 84669, 92937, 223613, 245449, 397961, 402727, 670839, 736347, 1193883, 1208181, 2906969, 3190837, 5173493, 8720907, 9572511, 15520479, 40989983, 41480881, 67255409, 122969949, 124442643, 201766227, 532869779, 1598609337, 6927307127, 20781921381]

約数ペア:

[(1, 20781921381), (3, 6927307127), (13, 1598609337), (39, 532869779), (103, 201766227), (167, 124442643), (169, 122969949), (309, 67255409), (501, 41480881), (507, 40989983), (1339, 15520479), (2171, 9572511), (2383, 8720907), (4017, 5173493), (6513, 3190837), (7149, 2906969), (17201, 1208181), (17407, 1193883), (28223, 736347), (30979, 670839), (51603, 402727), (52221, 397961), (84669, 245449), (92937, 223613)]