8655220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{293}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 20942208

約数和(自身を除く): 12286988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 293, 422, 586, 844, 1055, 1172, 1465, 1477, 2051, 2110, 2930, 2954, 4102, 4220, 5860, 5908, 7385, 8204, 10255, 14770, 20510, 29540, 41020, 61823, 123646, 247292, 309115, 432761, 618230, 865522, 1236460, 1731044, 2163805, 4327610, 8655220]

約数ペア:

[(1, 8655220), (2, 4327610), (4, 2163805), (5, 1731044), (7, 1236460), (10, 865522), (14, 618230), (20, 432761), (28, 309115), (35, 247292), (70, 123646), (140, 61823), (211, 41020), (293, 29540), (422, 20510), (586, 14770), (844, 10255), (1055, 8204), (1172, 7385), (1465, 5908), (1477, 5860), (2051, 4220), (2110, 4102), (2930, 2954)]