21253520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9161}}^1$

素因数の和:9203

約数の個数: 40

約数和(自身を含む): 51123960

約数和(自身を除く): 29870440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9161, 18322, 36644, 45805, 73288, 91610, 146576, 183220, 265669, 366440, 531338, 732880, 1062676, 1328345, 2125352, 2656690, 4250704, 5313380, 10626760, 21253520]

約数ペア:

[(1, 21253520), (2, 10626760), (4, 5313380), (5, 4250704), (8, 2656690), (10, 2125352), (16, 1328345), (20, 1062676), (29, 732880), (40, 531338), (58, 366440), (80, 265669), (116, 183220), (145, 146576), (232, 91610), (290, 73288), (464, 45805), (580, 36644), (1160, 18322), (2320, 9161)]