21479860

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5623}}^1$

素因数の和:5823

約数の個数: 24

約数和(自身を含む): 45351936

約数和(自身を除く): 23872076

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5623, 11246, 22492, 28115, 56230, 112460, 1073993, 2147986, 4295972, 5369965, 10739930, 21479860]

約数ペア:

[(1, 21479860), (2, 10739930), (4, 5369965), (5, 4295972), (10, 2147986), (20, 1073993), (191, 112460), (382, 56230), (764, 28115), (955, 22492), (1910, 11246), (3820, 5623)]