21018580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{95539}}^1$

素因数の和:95559

約数の個数: 24

約数和(自身を含む): 48152160

約数和(自身を除く): 27133580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 95539, 191078, 382156, 477695, 955390, 1050929, 1910780, 2101858, 4203716, 5254645, 10509290, 21018580]

約数ペア:

[(1, 21018580), (2, 10509290), (4, 5254645), (5, 4203716), (10, 2101858), (11, 1910780), (20, 1050929), (22, 955390), (44, 477695), (55, 382156), (110, 191078), (220, 95539)]