209440959

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{2137}}^1$

素因数の和:2519

約数の個数: 32

約数和(自身を含む): 344816640

約数和(自身を除く): 135375681

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 359, 1077, 2137, 2513, 4667, 6411, 7539, 14001, 14959, 27781, 32669, 44877, 83343, 98007, 194467, 583401, 767183, 2301549, 5370281, 9973379, 16110843, 29920137, 69813653, 209440959]

約数ペア:

[(1, 209440959), (3, 69813653), (7, 29920137), (13, 16110843), (21, 9973379), (39, 5370281), (91, 2301549), (273, 767183), (359, 583401), (1077, 194467), (2137, 98007), (2513, 83343), (4667, 44877), (6411, 32669), (7539, 27781), (14001, 14959)]