80486260

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 172972800

約数和(自身を除く): 92486540

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 178, 206, 356, 412, 439, 445, 515, 878, 890, 1030, 1756, 1780, 2060, 2195, 4390, 8780, 9167, 18334, 36668, 39071, 45217, 45835, 78142, 90434, 91670, 156284, 180868, 183340, 195355, 226085, 390710, 452170, 781420, 904340, 4024313, 8048626, 16097252, 20121565, 40243130, 80486260]

約数ペア:

[(1, 80486260), (2, 40243130), (4, 20121565), (5, 16097252), (10, 8048626), (20, 4024313), (89, 904340), (103, 781420), (178, 452170), (206, 390710), (356, 226085), (412, 195355), (439, 183340), (445, 180868), (515, 156284), (878, 91670), (890, 90434), (1030, 78142), (1756, 45835), (1780, 45217), (2060, 39071), (2195, 36668), (4390, 18334), (8780, 9167)]