18864524

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 39325440

約数和(自身を除く): 20460916

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 131, 139, 148, 259, 262, 278, 518, 524, 556, 917, 973, 1036, 1834, 1946, 3668, 3892, 4847, 5143, 9694, 10286, 18209, 19388, 20572, 33929, 36001, 36418, 67858, 72002, 72836, 127463, 135716, 144004, 254926, 509852, 673733, 1347466, 2694932, 4716131, 9432262, 18864524]

約数ペア:

[(1, 18864524), (2, 9432262), (4, 4716131), (7, 2694932), (14, 1347466), (28, 673733), (37, 509852), (74, 254926), (131, 144004), (139, 135716), (148, 127463), (259, 72836), (262, 72002), (278, 67858), (518, 36418), (524, 36001), (556, 33929), (917, 20572), (973, 19388), (1036, 18209), (1834, 10286), (1946, 9694), (3668, 5143), (3892, 4847)]