18609040

素因数分解:

$2^4\times 5^1\times {\mathrm{457}}^1\times {\mathrm{509}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 43445880

約数和(自身を除く): 24836840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 457, 509, 914, 1018, 1828, 2036, 2285, 2545, 3656, 4072, 4570, 5090, 7312, 8144, 9140, 10180, 18280, 20360, 36560, 40720, 232613, 465226, 930452, 1163065, 1860904, 2326130, 3721808, 4652260, 9304520, 18609040]

約数ペア:

[(1, 18609040), (2, 9304520), (4, 4652260), (5, 3721808), (8, 2326130), (10, 1860904), (16, 1163065), (20, 930452), (40, 465226), (80, 232613), (457, 40720), (509, 36560), (914, 20360), (1018, 18280), (1828, 10180), (2036, 9140), (2285, 8144), (2545, 7312), (3656, 5090), (4072, 4570)]