18678340

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 41291712

約数和(自身を除く): 22613372

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 148, 172, 185, 215, 370, 430, 587, 740, 860, 1174, 1591, 2348, 2935, 3182, 5870, 6364, 7955, 11740, 15910, 21719, 25241, 31820, 43438, 50482, 86876, 100964, 108595, 126205, 217190, 252410, 434380, 504820, 933917, 1867834, 3735668, 4669585, 9339170, 18678340]

約数ペア:

[(1, 18678340), (2, 9339170), (4, 4669585), (5, 3735668), (10, 1867834), (20, 933917), (37, 504820), (43, 434380), (74, 252410), (86, 217190), (148, 126205), (172, 108595), (185, 100964), (215, 86876), (370, 50482), (430, 43438), (587, 31820), (740, 25241), (860, 21719), (1174, 15910), (1591, 11740), (2348, 7955), (2935, 6364), (3182, 5870)]