21421556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{17911}}^1$

素因数の和:17951

約数の個数: 24

約数和(自身を含む): 42129024

約数和(自身を除く): 20707468

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 92, 299, 598, 1196, 17911, 35822, 71644, 232843, 411953, 465686, 823906, 931372, 1647812, 5355389, 10710778, 21421556]

約数ペア:

[(1, 21421556), (2, 10710778), (4, 5355389), (13, 1647812), (23, 931372), (26, 823906), (46, 465686), (52, 411953), (92, 232843), (299, 71644), (598, 35822), (1196, 17911)]