20918745

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{7879}}^1$

素因数の和:7949

約数の個数: 24

約数和(自身を含む): 36878400

約数和(自身を除く): 15959655

約数列:

[1, 3, 5, 9, 15, 45, 59, 177, 295, 531, 885, 2655, 7879, 23637, 39395, 70911, 118185, 354555, 464861, 1394583, 2324305, 4183749, 6972915, 20918745]

約数ペア:

[(1, 20918745), (3, 6972915), (5, 4183749), (9, 2324305), (15, 1394583), (45, 464861), (59, 354555), (177, 118185), (295, 70911), (531, 39395), (885, 23637), (2655, 7879)]