21026224

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 41997312

約数和(自身を除く): 20971088

約数列:

[1, 2, 4, 8, 16, 71, 83, 142, 166, 223, 284, 332, 446, 568, 664, 892, 1136, 1328, 1784, 3568, 5893, 11786, 15833, 18509, 23572, 31666, 37018, 47144, 63332, 74036, 94288, 126664, 148072, 253328, 296144, 1314139, 2628278, 5256556, 10513112, 21026224]

約数ペア:

[(1, 21026224), (2, 10513112), (4, 5256556), (8, 2628278), (16, 1314139), (71, 296144), (83, 253328), (142, 148072), (166, 126664), (223, 94288), (284, 74036), (332, 63332), (446, 47144), (568, 37018), (664, 31666), (892, 23572), (1136, 18509), (1328, 15833), (1784, 11786), (3568, 5893)]