261396575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 371628000

約数和(自身を除く): 110231425

約数列:

[1, 5, 11, 25, 29, 55, 73, 145, 275, 319, 365, 449, 725, 803, 1595, 1825, 2117, 2245, 4015, 4939, 7975, 10585, 11225, 13021, 20075, 23287, 24695, 32777, 52925, 65105, 116435, 123475, 143231, 163885, 325525, 360547, 582175, 716155, 819425, 950533, 1802735, 3580775, 4752665, 9013675, 10455863, 23763325, 52279315, 261396575]

約数ペア:

[(1, 261396575), (5, 52279315), (11, 23763325), (25, 10455863), (29, 9013675), (55, 4752665), (73, 3580775), (145, 1802735), (275, 950533), (319, 819425), (365, 716155), (449, 582175), (725, 360547), (803, 325525), (1595, 163885), (1825, 143231), (2117, 123475), (2245, 116435), (4015, 65105), (4939, 52925), (7975, 32777), (10585, 24695), (11225, 23287), (13021, 20075)]