20211804

素因数分解:

$2^2\times 3^2\times {\mathrm{561439}}^1$

素因数の和:561449

約数の個数: 18

約数和(自身を含む): 51091040

約数和(自身を除く): 30879236

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 561439, 1122878, 1684317, 2245756, 3368634, 5052951, 6737268, 10105902, 20211804]

約数ペア:

[(1, 20211804), (2, 10105902), (3, 6737268), (4, 5052951), (6, 3368634), (9, 2245756), (12, 1684317), (18, 1122878), (36, 561439)]