13086220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{443}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 31627008

約数和(自身を除く): 18540788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 443, 844, 886, 1055, 1477, 1772, 2110, 2215, 2954, 3101, 4220, 4430, 5908, 6202, 7385, 8860, 12404, 14770, 15505, 29540, 31010, 62020, 93473, 186946, 373892, 467365, 654311, 934730, 1308622, 1869460, 2617244, 3271555, 6543110, 13086220]

約数ペア:

[(1, 13086220), (2, 6543110), (4, 3271555), (5, 2617244), (7, 1869460), (10, 1308622), (14, 934730), (20, 654311), (28, 467365), (35, 373892), (70, 186946), (140, 93473), (211, 62020), (422, 31010), (443, 29540), (844, 15505), (886, 14770), (1055, 12404), (1477, 8860), (1772, 7385), (2110, 6202), (2215, 5908), (2954, 4430), (3101, 4220)]