21353255

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1499}}^1$

素因数の和:1559

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 11478745

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 1499, 2035, 2849, 7495, 10493, 14245, 16489, 52465, 55463, 82445, 115423, 277315, 388241, 577115, 610093, 1941205, 3050465, 4270651, 21353255]

約数ペア:

[(1, 21353255), (5, 4270651), (7, 3050465), (11, 1941205), (35, 610093), (37, 577115), (55, 388241), (77, 277315), (185, 115423), (259, 82445), (385, 55463), (407, 52465), (1295, 16489), (1499, 14245), (2035, 10493), (2849, 7495)]