21740968

素因数分解:

$2^3\times {\mathrm{1153}}^1\times {\mathrm{2357}}^1$

素因数の和:3516

約数の個数: 16

約数和(自身を含む): 40816980

約数和(自身を除く): 19076012

約数列:

[1, 2, 4, 8, 1153, 2306, 2357, 4612, 4714, 9224, 9428, 18856, 2717621, 5435242, 10870484, 21740968]

約数ペア:

[(1, 21740968), (2, 10870484), (4, 5435242), (8, 2717621), (1153, 18856), (2306, 9428), (2357, 9224), (4612, 4714)]