19987432

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{599}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 38808000

約数和(自身を除く): 18820568

約数列:

[1, 2, 4, 8, 43, 86, 97, 172, 194, 344, 388, 599, 776, 1198, 2396, 4171, 4792, 8342, 16684, 25757, 33368, 51514, 58103, 103028, 116206, 206056, 232412, 464824, 2498429, 4996858, 9993716, 19987432]

約数ペア:

[(1, 19987432), (2, 9993716), (4, 4996858), (8, 2498429), (43, 464824), (86, 232412), (97, 206056), (172, 116206), (194, 103028), (344, 58103), (388, 51514), (599, 33368), (776, 25757), (1198, 16684), (2396, 8342), (4171, 4792)]