205656969

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 343808000

約数和(自身を除く): 138151031

約数列:

[1, 3, 7, 19, 21, 49, 57, 67, 133, 147, 157, 201, 343, 399, 469, 471, 931, 1029, 1099, 1273, 1407, 2793, 2983, 3283, 3297, 3819, 6517, 7693, 8911, 8949, 9849, 10519, 19551, 20881, 22981, 23079, 26733, 31557, 53851, 62377, 62643, 68943, 73633, 146167, 161553, 187131, 199861, 220899, 436639, 438501, 515431, 599583, 1023169, 1309917, 1399027, 1546293, 3069507, 3608017, 4197081, 9793189, 10824051, 29379567, 68552323, 205656969]

約数ペア:

[(1, 205656969), (3, 68552323), (7, 29379567), (19, 10824051), (21, 9793189), (49, 4197081), (57, 3608017), (67, 3069507), (133, 1546293), (147, 1399027), (157, 1309917), (201, 1023169), (343, 599583), (399, 515431), (469, 438501), (471, 436639), (931, 220899), (1029, 199861), (1099, 187131), (1273, 161553), (1407, 146167), (2793, 73633), (2983, 68943), (3283, 62643), (3297, 62377), (3819, 53851), (6517, 31557), (7693, 26733), (8911, 23079), (8949, 22981), (9849, 20881), (10519, 19551)]