21317872

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1093}}^1$

素因数の和:1177

約数の個数: 40

約数和(自身を含む): 43952544

約数和(自身を除く): 22634672

約数列:

[1, 2, 4, 8, 16, 23, 46, 53, 92, 106, 184, 212, 368, 424, 848, 1093, 1219, 2186, 2438, 4372, 4876, 8744, 9752, 17488, 19504, 25139, 50278, 57929, 100556, 115858, 201112, 231716, 402224, 463432, 926864, 1332367, 2664734, 5329468, 10658936, 21317872]

約数ペア:

[(1, 21317872), (2, 10658936), (4, 5329468), (8, 2664734), (16, 1332367), (23, 926864), (46, 463432), (53, 402224), (92, 231716), (106, 201112), (184, 115858), (212, 100556), (368, 57929), (424, 50278), (848, 25139), (1093, 19504), (1219, 17488), (2186, 9752), (2438, 8744), (4372, 4876)]