31133571

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 51874560

約数和(自身を除く): 20740989

約数列:

[1, 3, 7, 19, 21, 49, 57, 71, 133, 147, 157, 213, 399, 471, 497, 931, 1099, 1349, 1491, 2793, 2983, 3297, 3479, 4047, 7693, 8949, 9443, 10437, 11147, 20881, 23079, 28329, 33441, 62643, 66101, 78029, 146167, 198303, 211793, 234087, 438501, 546203, 635379, 1482551, 1638609, 4447653, 10377857, 31133571]

約数ペア:

[(1, 31133571), (3, 10377857), (7, 4447653), (19, 1638609), (21, 1482551), (49, 635379), (57, 546203), (71, 438501), (133, 234087), (147, 211793), (157, 198303), (213, 146167), (399, 78029), (471, 66101), (497, 62643), (931, 33441), (1099, 28329), (1349, 23079), (1491, 20881), (2793, 11147), (2983, 10437), (3297, 9443), (3479, 8949), (4047, 7693)]