20839995

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42101}}^1$

素因数の和:42123

約数の個数: 24

約数和(自身を含む): 39407472

約数和(自身を除く): 18567477

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42101, 126303, 210505, 378909, 463111, 631515, 1389333, 1894545, 2315555, 4167999, 6946665, 20839995]

約数ペア:

[(1, 20839995), (3, 6946665), (5, 4167999), (9, 2315555), (11, 1894545), (15, 1389333), (33, 631515), (45, 463111), (55, 378909), (99, 210505), (165, 126303), (495, 42101)]