21939512

素因数分解:

$2^3\times 7^1\times {\mathrm{401}}^1\times {\mathrm{977}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 47178720

約数和(自身を除く): 25239208

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 401, 802, 977, 1604, 1954, 2807, 3208, 3908, 5614, 6839, 7816, 11228, 13678, 22456, 27356, 54712, 391777, 783554, 1567108, 2742439, 3134216, 5484878, 10969756, 21939512]

約数ペア:

[(1, 21939512), (2, 10969756), (4, 5484878), (7, 3134216), (8, 2742439), (14, 1567108), (28, 783554), (56, 391777), (401, 54712), (802, 27356), (977, 22456), (1604, 13678), (1954, 11228), (2807, 7816), (3208, 6839), (3908, 5614)]