21458264

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{839}}^1$

素因数の和:1007

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20877736

約数列:

[1, 2, 4, 8, 23, 46, 92, 139, 184, 278, 556, 839, 1112, 1678, 3197, 3356, 6394, 6712, 12788, 19297, 25576, 38594, 77188, 116621, 154376, 233242, 466484, 932968, 2682283, 5364566, 10729132, 21458264]

約数ペア:

[(1, 21458264), (2, 10729132), (4, 5364566), (8, 2682283), (23, 932968), (46, 466484), (92, 233242), (139, 154376), (184, 116621), (278, 77188), (556, 38594), (839, 25576), (1112, 19297), (1678, 12788), (3197, 6712), (3356, 6394)]