21291246008

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{223441}}^1$

素因数の和:223767

約数の個数: 32

約数和(自身を含む): 40997138160

約数和(自身を除く): 19705892152

約数列:

[1, 2, 4, 8, 43, 86, 172, 277, 344, 554, 1108, 2216, 11911, 23822, 47644, 95288, 223441, 446882, 893764, 1787528, 9607963, 19215926, 38431852, 61893157, 76863704, 123786314, 247572628, 495145256, 2661405751, 5322811502, 10645623004, 21291246008]

約数ペア:

[(1, 21291246008), (2, 10645623004), (4, 5322811502), (8, 2661405751), (43, 495145256), (86, 247572628), (172, 123786314), (277, 76863704), (344, 61893157), (554, 38431852), (1108, 19215926), (2216, 9607963), (11911, 1787528), (23822, 893764), (47644, 446882), (95288, 223441)]