21980944

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4889}}^1$

素因数の和:5178

約数の個数: 20

約数和(自身を含む): 42748380

約数和(自身を除く): 20767436

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4889, 9778, 19556, 39112, 78224, 1373809, 2747618, 5495236, 10990472, 21980944]

約数ペア:

[(1, 21980944), (2, 10990472), (4, 5495236), (8, 2747618), (16, 1373809), (281, 78224), (562, 39112), (1124, 19556), (2248, 9778), (4496, 4889)]