21104168

素因数分解:

$2^3\times {\mathrm{1039}}^1\times {\mathrm{2539}}^1$

素因数の和:3584

約数の個数: 16

約数和(自身を含む): 39624000

約数和(自身を除く): 18519832

約数列:

[1, 2, 4, 8, 1039, 2078, 2539, 4156, 5078, 8312, 10156, 20312, 2638021, 5276042, 10552084, 21104168]

約数ペア:

[(1, 21104168), (2, 10552084), (4, 5276042), (8, 2638021), (1039, 20312), (2078, 10156), (2539, 8312), (4156, 5078)]