20216900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18379}}^1$

素因数の和:18404

約数の個数: 36

約数和(自身を含む): 47861520

約数和(自身を除く): 27644620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18379, 36758, 73516, 91895, 183790, 202169, 367580, 404338, 459475, 808676, 918950, 1010845, 1837900, 2021690, 4043380, 5054225, 10108450, 20216900]

約数ペア:

[(1, 20216900), (2, 10108450), (4, 5054225), (5, 4043380), (10, 2021690), (11, 1837900), (20, 1010845), (22, 918950), (25, 808676), (44, 459475), (50, 404338), (55, 367580), (100, 202169), (110, 183790), (220, 91895), (275, 73516), (550, 36758), (1100, 18379)]