20616855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8537}}^1$

素因数の和:8575

約数の個数: 32

約数和(自身を含む): 39343104

約数和(自身を除く): 18726249

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8537, 25611, 42685, 59759, 128055, 179277, 196351, 298795, 589053, 896385, 981755, 1374457, 2945265, 4123371, 6872285, 20616855]

約数ペア:

[(1, 20616855), (3, 6872285), (5, 4123371), (7, 2945265), (15, 1374457), (21, 981755), (23, 896385), (35, 589053), (69, 298795), (105, 196351), (115, 179277), (161, 128055), (345, 59759), (483, 42685), (805, 25611), (2415, 8537)]