20117900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18289}}^1$

素因数の和:18314

約数の個数: 36

約数和(自身を含む): 47627160

約数和(自身を除く): 27509260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18289, 36578, 73156, 91445, 182890, 201179, 365780, 402358, 457225, 804716, 914450, 1005895, 1828900, 2011790, 4023580, 5029475, 10058950, 20117900]

約数ペア:

[(1, 20117900), (2, 10058950), (4, 5029475), (5, 4023580), (10, 2011790), (11, 1828900), (20, 1005895), (22, 914450), (25, 804716), (44, 457225), (50, 402358), (55, 365780), (100, 201179), (110, 182890), (220, 91445), (275, 73156), (550, 36578), (1100, 18289)]