18781940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1493}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 42919632

約数和(自身を除く): 24137692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 148, 170, 185, 340, 370, 629, 740, 1258, 1493, 2516, 2986, 3145, 5972, 6290, 7465, 12580, 14930, 25381, 29860, 50762, 55241, 101524, 110482, 126905, 220964, 253810, 276205, 507620, 552410, 939097, 1104820, 1878194, 3756388, 4695485, 9390970, 18781940]

約数ペア:

[(1, 18781940), (2, 9390970), (4, 4695485), (5, 3756388), (10, 1878194), (17, 1104820), (20, 939097), (34, 552410), (37, 507620), (68, 276205), (74, 253810), (85, 220964), (148, 126905), (170, 110482), (185, 101524), (340, 55241), (370, 50762), (629, 29860), (740, 25381), (1258, 14930), (1493, 12580), (2516, 7465), (2986, 6290), (3145, 5972)]