21840868

素因数分解:

$2^2\times 7^3\times {\mathrm{15919}}^1$

素因数の和:15944

約数の個数: 24

約数和(自身を含む): 44576000

約数和(自身を除く): 22735132

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15919, 31838, 63676, 111433, 222866, 445732, 780031, 1560062, 3120124, 5460217, 10920434, 21840868]

約数ペア:

[(1, 21840868), (2, 10920434), (4, 5460217), (7, 3120124), (14, 1560062), (28, 780031), (49, 445732), (98, 222866), (196, 111433), (343, 63676), (686, 31838), (1372, 15919)]