20508920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10909}}^1$

素因数の和:10967

約数の個数: 32

約数和(自身を含む): 47131200

約数和(自身を除く): 26622280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10909, 21818, 43636, 54545, 87272, 109090, 218180, 436360, 512723, 1025446, 2050892, 2563615, 4101784, 5127230, 10254460, 20508920]

約数ペア:

[(1, 20508920), (2, 10254460), (4, 5127230), (5, 4101784), (8, 2563615), (10, 2050892), (20, 1025446), (40, 512723), (47, 436360), (94, 218180), (188, 109090), (235, 87272), (376, 54545), (470, 43636), (940, 21818), (1880, 10909)]