20013315

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{373}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 37860768

約数和(自身を除く): 17847453

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 73, 105, 147, 219, 245, 365, 373, 511, 735, 1095, 1119, 1533, 1865, 2555, 2611, 3577, 5595, 7665, 7833, 10731, 13055, 17885, 18277, 27229, 39165, 53655, 54831, 81687, 91385, 136145, 190603, 274155, 408435, 571809, 953015, 1334221, 2859045, 4002663, 6671105, 20013315]

約数ペア:

[(1, 20013315), (3, 6671105), (5, 4002663), (7, 2859045), (15, 1334221), (21, 953015), (35, 571809), (49, 408435), (73, 274155), (105, 190603), (147, 136145), (219, 91385), (245, 81687), (365, 54831), (373, 53655), (511, 39165), (735, 27229), (1095, 18277), (1119, 17885), (1533, 13055), (1865, 10731), (2555, 7833), (2611, 7665), (3577, 5595)]