21984380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99929}}^1$

素因数の和:99949

約数の個数: 24

約数和(自身を含む): 50364720

約数和(自身を除く): 28380340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99929, 199858, 399716, 499645, 999290, 1099219, 1998580, 2198438, 4396876, 5496095, 10992190, 21984380]

約数ペア:

[(1, 21984380), (2, 10992190), (4, 5496095), (5, 4396876), (10, 2198438), (11, 1998580), (20, 1099219), (22, 999290), (44, 499645), (55, 399716), (110, 199858), (220, 99929)]