20916752

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{503}}^1$

素因数の和:647

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 21830512

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 113, 184, 226, 368, 452, 503, 904, 1006, 1808, 2012, 2599, 4024, 5198, 8048, 10396, 11569, 20792, 23138, 41584, 46276, 56839, 92552, 113678, 185104, 227356, 454712, 909424, 1307297, 2614594, 5229188, 10458376, 20916752]

約数ペア:

[(1, 20916752), (2, 10458376), (4, 5229188), (8, 2614594), (16, 1307297), (23, 909424), (46, 454712), (92, 227356), (113, 185104), (184, 113678), (226, 92552), (368, 56839), (452, 46276), (503, 41584), (904, 23138), (1006, 20792), (1808, 11569), (2012, 10396), (2599, 8048), (4024, 5198)]