21378288

素因数分解:

$2^4\times 3^1\times {\mathrm{257}}^1\times {\mathrm{1733}}^1$

素因数の和:2001

約数の個数: 40

約数和(自身を含む): 55474128

約数和(自身を除く): 34095840

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 257, 514, 771, 1028, 1542, 1733, 2056, 3084, 3466, 4112, 5199, 6168, 6932, 10398, 12336, 13864, 20796, 27728, 41592, 83184, 445381, 890762, 1336143, 1781524, 2672286, 3563048, 5344572, 7126096, 10689144, 21378288]

約数ペア:

[(1, 21378288), (2, 10689144), (3, 7126096), (4, 5344572), (6, 3563048), (8, 2672286), (12, 1781524), (16, 1336143), (24, 890762), (48, 445381), (257, 83184), (514, 41592), (771, 27728), (1028, 20796), (1542, 13864), (1733, 12336), (2056, 10398), (3084, 6932), (3466, 6168), (4112, 5199)]