21805568

素因数分解:

$2^9\times {\mathrm{42589}}^1$

素因数の和:42607

約数の個数: 20

約数和(自身を含む): 43569570

約数和(自身を除く): 21764002

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 42589, 85178, 170356, 340712, 681424, 1362848, 2725696, 5451392, 10902784, 21805568]

約数ペア:

[(1, 21805568), (2, 10902784), (4, 5451392), (8, 2725696), (16, 1362848), (32, 681424), (64, 340712), (128, 170356), (256, 85178), (512, 42589)]