19812496

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{112571}}^1$

素因数の和:112590

約数の個数: 20

約数和(自身を含む): 41876784

約数和(自身を除く): 22064288

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 112571, 225142, 450284, 900568, 1238281, 1801136, 2476562, 4953124, 9906248, 19812496]

約数ペア:

[(1, 19812496), (2, 9906248), (4, 4953124), (8, 2476562), (11, 1801136), (16, 1238281), (22, 900568), (44, 450284), (88, 225142), (176, 112571)]