20048665

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 29917440

約数和(自身を除く): 9868775

約数列:

[1, 5, 7, 13, 35, 65, 91, 139, 317, 455, 695, 973, 1585, 1807, 2219, 4121, 4865, 9035, 11095, 12649, 20605, 28847, 44063, 63245, 144235, 220315, 308441, 572819, 1542205, 2864095, 4009733, 20048665]

約数ペア:

[(1, 20048665), (5, 4009733), (7, 2864095), (13, 1542205), (35, 572819), (65, 308441), (91, 220315), (139, 144235), (317, 63245), (455, 44063), (695, 28847), (973, 20605), (1585, 12649), (1807, 11095), (2219, 9035), (4121, 4865)]