21904028

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{347}}^1\times {\mathrm{367}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 39443712

約数和(自身を除く): 17539684

約数列:

[1, 2, 4, 43, 86, 172, 347, 367, 694, 734, 1388, 1468, 14921, 15781, 29842, 31562, 59684, 63124, 127349, 254698, 509396, 5476007, 10952014, 21904028]

約数ペア:

[(1, 21904028), (2, 10952014), (4, 5476007), (43, 509396), (86, 254698), (172, 127349), (347, 63124), (367, 59684), (694, 31562), (734, 29842), (1388, 15781), (1468, 14921)]