20403979765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{479}}^1\times {\mathrm{28493}}^1$

素因数の和:29013

約数の個数: 32

約数和(自身を含む): 27573073920

約数和(自身を除く): 7169094155

約数列:

[1, 5, 13, 23, 65, 115, 299, 479, 1495, 2395, 6227, 11017, 28493, 31135, 55085, 142465, 143221, 370409, 655339, 716105, 1852045, 3276695, 8519407, 13648147, 42597035, 68240735, 177425911, 313907381, 887129555, 1569536905, 4080795953, 20403979765]

約数ペア:

[(1, 20403979765), (5, 4080795953), (13, 1569536905), (23, 887129555), (65, 313907381), (115, 177425911), (299, 68240735), (479, 42597035), (1495, 13648147), (2395, 8519407), (6227, 3276695), (11017, 1852045), (28493, 716105), (31135, 655339), (55085, 370409), (142465, 143221)]