21098900

素因数分解:

$2^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{2089}}^1$

素因数の和:2204

約数の個数: 36

約数和(自身を含む): 46260060

約数和(自身を除く): 25161160

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 202, 404, 505, 1010, 2020, 2089, 2525, 4178, 5050, 8356, 10100, 10445, 20890, 41780, 52225, 104450, 208900, 210989, 421978, 843956, 1054945, 2109890, 4219780, 5274725, 10549450, 21098900]

約数ペア:

[(1, 21098900), (2, 10549450), (4, 5274725), (5, 4219780), (10, 2109890), (20, 1054945), (25, 843956), (50, 421978), (100, 210989), (101, 208900), (202, 104450), (404, 52225), (505, 41780), (1010, 20890), (2020, 10445), (2089, 10100), (2525, 8356), (4178, 5050)]