20547189

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 60

約数和(自身を含む): 35428800

約数和(自身を除く): 14881611

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 79, 81, 117, 169, 171, 237, 247, 351, 507, 513, 711, 741, 1027, 1053, 1501, 1521, 1539, 2133, 2223, 3081, 3211, 4503, 4563, 6399, 6669, 9243, 9633, 13351, 13509, 13689, 19513, 20007, 27729, 28899, 40053, 40527, 58539, 83187, 86697, 120159, 121581, 175617, 253669, 260091, 360477, 526851, 761007, 1081431, 1580553, 2283021, 6849063, 20547189]

約数ペア:

[(1, 20547189), (3, 6849063), (9, 2283021), (13, 1580553), (19, 1081431), (27, 761007), (39, 526851), (57, 360477), (79, 260091), (81, 253669), (117, 175617), (169, 121581), (171, 120159), (237, 86697), (247, 83187), (351, 58539), (507, 40527), (513, 40053), (711, 28899), (741, 27729), (1027, 20007), (1053, 19513), (1501, 13689), (1521, 13509), (1539, 13351), (2133, 9633), (2223, 9243), (3081, 6669), (3211, 6399), (4503, 4563)]