21921968

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9857}}^1$

素因数の和:10004

約数の個数: 20

約数和(自身を含む): 42783720

約数和(自身を除く): 20861752

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9857, 19714, 39428, 78856, 157712, 1370123, 2740246, 5480492, 10960984, 21921968]

約数ペア:

[(1, 21921968), (2, 10960984), (4, 5480492), (8, 2740246), (16, 1370123), (139, 157712), (278, 78856), (556, 39428), (1112, 19714), (2224, 9857)]