21208780

素因数分解:

$2^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{2843}}^1$

素因数の和:3225

約数の個数: 24

約数和(自身を含む): 44673552

約数和(自身を除く): 23464772

約数列:

[1, 2, 4, 5, 10, 20, 373, 746, 1492, 1865, 2843, 3730, 5686, 7460, 11372, 14215, 28430, 56860, 1060439, 2120878, 4241756, 5302195, 10604390, 21208780]

約数ペア:

[(1, 21208780), (2, 10604390), (4, 5302195), (5, 4241756), (10, 2120878), (20, 1060439), (373, 56860), (746, 28430), (1492, 14215), (1865, 11372), (2843, 7460), (3730, 5686)]