19902705

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{57689}}^1$

素因数の和:57720

約数の個数: 16

約数和(自身を含む): 33229440

約数和(自身を除く): 13326735

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 57689, 173067, 288445, 865335, 1326847, 3980541, 6634235, 19902705]

約数ペア:

[(1, 19902705), (3, 6634235), (5, 3980541), (15, 1326847), (23, 865335), (69, 288445), (115, 173067), (345, 57689)]