20904720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87103}}^1$

素因数の和:87119

約数の個数: 40

約数和(自身を含む): 64805376

約数和(自身を除く): 43900656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87103, 174206, 261309, 348412, 435515, 522618, 696824, 871030, 1045236, 1306545, 1393648, 1742060, 2090472, 2613090, 3484120, 4180944, 5226180, 6968240, 10452360, 20904720]

約数ペア:

[(1, 20904720), (2, 10452360), (3, 6968240), (4, 5226180), (5, 4180944), (6, 3484120), (8, 2613090), (10, 2090472), (12, 1742060), (15, 1393648), (16, 1306545), (20, 1045236), (24, 871030), (30, 696824), (40, 522618), (48, 435515), (60, 348412), (80, 261309), (120, 174206), (240, 87103)]