20478444

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1861}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 55055616

約数和(自身を除く): 34577172

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 131, 262, 393, 524, 786, 917, 1572, 1834, 1861, 2751, 3668, 3722, 5502, 5583, 7444, 11004, 11166, 13027, 22332, 26054, 39081, 52108, 78162, 156324, 243791, 487582, 731373, 975164, 1462746, 1706537, 2925492, 3413074, 5119611, 6826148, 10239222, 20478444]

約数ペア:

[(1, 20478444), (2, 10239222), (3, 6826148), (4, 5119611), (6, 3413074), (7, 2925492), (12, 1706537), (14, 1462746), (21, 975164), (28, 731373), (42, 487582), (84, 243791), (131, 156324), (262, 78162), (393, 52108), (524, 39081), (786, 26054), (917, 22332), (1572, 13027), (1834, 11166), (1861, 11004), (2751, 7444), (3668, 5583), (3722, 5502)]