21395605

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{467}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 34572096

約数和(自身を除く): 13176491

約数列:

[1, 5, 7, 11, 17, 35, 49, 55, 77, 85, 119, 187, 245, 385, 467, 539, 595, 833, 935, 1309, 2335, 2695, 3269, 4165, 5137, 6545, 7939, 9163, 16345, 22883, 25685, 35959, 39695, 45815, 55573, 87329, 114415, 179795, 251713, 277865, 389011, 436645, 611303, 1258565, 1945055, 3056515, 4279121, 21395605]

約数ペア:

[(1, 21395605), (5, 4279121), (7, 3056515), (11, 1945055), (17, 1258565), (35, 611303), (49, 436645), (55, 389011), (77, 277865), (85, 251713), (119, 179795), (187, 114415), (245, 87329), (385, 55573), (467, 45815), (539, 39695), (595, 35959), (833, 25685), (935, 22883), (1309, 16345), (2335, 9163), (2695, 7939), (3269, 6545), (4165, 5137)]