20348440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72673}}^1$

素因数の和:72691

約数の個数: 32

約数和(自身を含む): 52325280

約数和(自身を除く): 31976840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72673, 145346, 290692, 363365, 508711, 581384, 726730, 1017422, 1453460, 2034844, 2543555, 2906920, 4069688, 5087110, 10174220, 20348440]

約数ペア:

[(1, 20348440), (2, 10174220), (4, 5087110), (5, 4069688), (7, 2906920), (8, 2543555), (10, 2034844), (14, 1453460), (20, 1017422), (28, 726730), (35, 581384), (40, 508711), (56, 363365), (70, 290692), (140, 145346), (280, 72673)]