222088900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2125

約数の個数: 72

約数和(自身を含む): 531216000

約数和(自身を除く): 309127100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 101, 110, 202, 220, 275, 404, 505, 550, 1010, 1100, 1111, 1999, 2020, 2222, 2525, 3998, 4444, 5050, 5555, 7996, 9995, 10100, 11110, 19990, 21989, 22220, 27775, 39980, 43978, 49975, 55550, 87956, 99950, 109945, 111100, 199900, 201899, 219890, 403798, 439780, 549725, 807596, 1009495, 1099450, 2018990, 2198900, 2220889, 4037980, 4441778, 5047475, 8883556, 10094950, 11104445, 20189900, 22208890, 44417780, 55522225, 111044450, 222088900]

約数ペア:

[(1, 222088900), (2, 111044450), (4, 55522225), (5, 44417780), (10, 22208890), (11, 20189900), (20, 11104445), (22, 10094950), (25, 8883556), (44, 5047475), (50, 4441778), (55, 4037980), (100, 2220889), (101, 2198900), (110, 2018990), (202, 1099450), (220, 1009495), (275, 807596), (404, 549725), (505, 439780), (550, 403798), (1010, 219890), (1100, 201899), (1111, 199900), (1999, 111100), (2020, 109945), (2222, 99950), (2525, 87956), (3998, 55550), (4444, 49975), (5050, 43978), (5555, 39980), (7996, 27775), (9995, 22220), (10100, 21989), (11110, 19990)]