28144820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127931}}^1$

素因数の和:127951

約数の個数: 24

約数和(自身を含む): 64477728

約数和(自身を除く): 36332908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 127931, 255862, 511724, 639655, 1279310, 1407241, 2558620, 2814482, 5628964, 7036205, 14072410, 28144820]

約数ペア:

[(1, 28144820), (2, 14072410), (4, 7036205), (5, 5628964), (10, 2814482), (11, 2558620), (20, 1407241), (22, 1279310), (44, 639655), (55, 511724), (110, 255862), (220, 127931)]