20515495

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4099}}^1$

素因数の和:4135

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12546905

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4099, 5005, 20495, 28693, 45089, 53287, 143465, 225445, 266435, 315623, 373009, 586157, 1578115, 1865045, 2930785, 4103099, 20515495]

約数ペア:

[(1, 20515495), (5, 4103099), (7, 2930785), (11, 1865045), (13, 1578115), (35, 586157), (55, 373009), (65, 315623), (77, 266435), (91, 225445), (143, 143465), (385, 53287), (455, 45089), (715, 28693), (1001, 20495), (4099, 5005)]