80108720

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2281}}^1$

素因数の和:2733

約数の個数: 40

約数和(自身を含む): 186758880

約数和(自身を除く): 106650160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 878, 1756, 2195, 2281, 3512, 4390, 4562, 7024, 8780, 9124, 11405, 17560, 18248, 22810, 35120, 36496, 45620, 91240, 182480, 1001359, 2002718, 4005436, 5006795, 8010872, 10013590, 16021744, 20027180, 40054360, 80108720]

約数ペア:

[(1, 80108720), (2, 40054360), (4, 20027180), (5, 16021744), (8, 10013590), (10, 8010872), (16, 5006795), (20, 4005436), (40, 2002718), (80, 1001359), (439, 182480), (878, 91240), (1756, 45620), (2195, 36496), (2281, 35120), (3512, 22810), (4390, 18248), (4562, 17560), (7024, 11405), (8780, 9124)]