209215745

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{3739}}^1$

素因数の和:3813

約数の個数: 24

約数和(自身を含む): 273588480

約数和(自身を除く): 64372735

約数列:

[1, 5, 19, 31, 95, 155, 361, 589, 1805, 2945, 3739, 11191, 18695, 55955, 71041, 115909, 355205, 579545, 1349779, 2202271, 6748895, 11011355, 41843149, 209215745]

約数ペア:

[(1, 209215745), (5, 41843149), (19, 11011355), (31, 6748895), (95, 2202271), (155, 1349779), (361, 579545), (589, 355205), (1805, 115909), (2945, 71041), (3739, 55955), (11191, 18695)]