20004215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{233}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 10187401

約数列:

[1, 5, 7, 11, 35, 55, 77, 223, 233, 385, 1115, 1165, 1561, 1631, 2453, 2563, 7805, 8155, 12265, 12815, 17171, 17941, 51959, 85855, 89705, 259795, 363713, 571549, 1818565, 2857745, 4000843, 20004215]

約数ペア:

[(1, 20004215), (5, 4000843), (7, 2857745), (11, 1818565), (35, 571549), (55, 363713), (77, 259795), (223, 89705), (233, 85855), (385, 51959), (1115, 17941), (1165, 17171), (1561, 12815), (1631, 12265), (2453, 8155), (2563, 7805)]