21431377

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 25482240

約数和(自身を除く): 4050863

約数列:

[1, 11, 23, 29, 127, 253, 319, 529, 667, 1397, 2921, 3683, 5819, 7337, 15341, 32131, 40513, 67183, 84709, 168751, 739013, 931799, 1948307, 21431377]

約数ペア:

[(1, 21431377), (11, 1948307), (23, 931799), (29, 739013), (127, 168751), (253, 84709), (319, 67183), (529, 40513), (667, 32131), (1397, 15341), (2921, 7337), (3683, 5819)]