19911212784

素因数分解:

$2^4\times 3^2\times {\mathrm{647}}^1\times {\mathrm{213713}}^1$

素因数の和:214374

約数の個数: 60

約数和(自身を含む): 55810128816

約数和(自身を除く): 35898916032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 647, 1294, 1941, 2588, 3882, 5176, 5823, 7764, 10352, 11646, 15528, 23292, 31056, 46584, 93168, 213713, 427426, 641139, 854852, 1282278, 1709704, 1923417, 2564556, 3419408, 3846834, 5129112, 7693668, 10258224, 15387336, 30774672, 138272311, 276544622, 414816933, 553089244, 829633866, 1106178488, 1244450799, 1659267732, 2212356976, 2488901598, 3318535464, 4977803196, 6637070928, 9955606392, 19911212784]

約数ペア:

[(1, 19911212784), (2, 9955606392), (3, 6637070928), (4, 4977803196), (6, 3318535464), (8, 2488901598), (9, 2212356976), (12, 1659267732), (16, 1244450799), (18, 1106178488), (24, 829633866), (36, 553089244), (48, 414816933), (72, 276544622), (144, 138272311), (647, 30774672), (1294, 15387336), (1941, 10258224), (2588, 7693668), (3882, 5129112), (5176, 3846834), (5823, 3419408), (7764, 2564556), (10352, 1923417), (11646, 1709704), (15528, 1282278), (23292, 854852), (31056, 641139), (46584, 427426), (93168, 213713)]