1805296900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{821}}^1\times {\mathrm{1999}}^1$

素因数の和:2845

約数の個数: 72

約数和(自身を含む): 4280976000

約数和(自身を除く): 2475679100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 821, 1100, 1642, 1999, 3284, 3998, 4105, 7996, 8210, 9031, 9995, 16420, 18062, 19990, 20525, 21989, 36124, 39980, 41050, 43978, 45155, 49975, 82100, 87956, 90310, 99950, 109945, 180620, 199900, 219890, 225775, 439780, 451550, 549725, 903100, 1099450, 1641179, 2198900, 3282358, 6564716, 8205895, 16411790, 18052969, 32823580, 36105938, 41029475, 72211876, 82058950, 90264845, 164117900, 180529690, 361059380, 451324225, 902648450, 1805296900]

約数ペア:

[(1, 1805296900), (2, 902648450), (4, 451324225), (5, 361059380), (10, 180529690), (11, 164117900), (20, 90264845), (22, 82058950), (25, 72211876), (44, 41029475), (50, 36105938), (55, 32823580), (100, 18052969), (110, 16411790), (220, 8205895), (275, 6564716), (550, 3282358), (821, 2198900), (1100, 1641179), (1642, 1099450), (1999, 903100), (3284, 549725), (3998, 451550), (4105, 439780), (7996, 225775), (8210, 219890), (9031, 199900), (9995, 180620), (16420, 109945), (18062, 99950), (19990, 90310), (20525, 87956), (21989, 82100), (36124, 49975), (39980, 45155), (41050, 43978)]