20544080

素因数分解:

$2^4\times 5^1\times {\mathrm{256801}}^1$

素因数の和:256814

約数の個数: 20

約数和(自身を含む): 47765172

約数和(自身を除く): 27221092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 256801, 513602, 1027204, 1284005, 2054408, 2568010, 4108816, 5136020, 10272040, 20544080]

約数ペア:

[(1, 20544080), (2, 10272040), (4, 5136020), (5, 4108816), (8, 2568010), (10, 2054408), (16, 1284005), (20, 1027204), (40, 513602), (80, 256801)]