71080720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20663}}^1$

素因数の和:20719

約数の個数: 40

約数和(自身を含む): 169114176

約数和(自身を除く): 98033456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 20663, 41326, 82652, 103315, 165304, 206630, 330608, 413260, 826520, 888509, 1653040, 1777018, 3554036, 4442545, 7108072, 8885090, 14216144, 17770180, 35540360, 71080720]

約数ペア:

[(1, 71080720), (2, 35540360), (4, 17770180), (5, 14216144), (8, 8885090), (10, 7108072), (16, 4442545), (20, 3554036), (40, 1777018), (43, 1653040), (80, 888509), (86, 826520), (172, 413260), (215, 330608), (344, 206630), (430, 165304), (688, 103315), (860, 82652), (1720, 41326), (3440, 20663)]