21128668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{1109}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 40466160

約数和(自身を除く): 19337492

約数列:

[1, 2, 4, 11, 22, 44, 433, 866, 1109, 1732, 2218, 4436, 4763, 9526, 12199, 19052, 24398, 48796, 480197, 960394, 1920788, 5282167, 10564334, 21128668]

約数ペア:

[(1, 21128668), (2, 10564334), (4, 5282167), (11, 1920788), (22, 960394), (44, 480197), (433, 48796), (866, 24398), (1109, 19052), (1732, 12199), (2218, 9526), (4436, 4763)]