61721605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 83897856

約数和(自身を除く): 22176251

約数列:

[1, 5, 11, 41, 55, 101, 205, 271, 451, 505, 1111, 1355, 2255, 2981, 4141, 5555, 11111, 14905, 20705, 27371, 45551, 55555, 122221, 136855, 227755, 301081, 611105, 1122211, 1505405, 5611055, 12344321, 61721605]

約数ペア:

[(1, 61721605), (5, 12344321), (11, 5611055), (41, 1505405), (55, 1122211), (101, 611105), (205, 301081), (271, 227755), (451, 136855), (505, 122221), (1111, 55555), (1355, 45551), (2255, 27371), (2981, 20705), (4141, 14905), (5555, 11111)]