21609686

素因数分解:

$2^1\times 7^3\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 40524000

約数和(自身を除く): 18914314

約数列:

[1, 2, 7, 14, 17, 34, 49, 98, 109, 119, 218, 238, 289, 343, 578, 686, 763, 833, 1526, 1666, 1853, 2023, 3706, 4046, 5341, 5831, 10682, 11662, 12971, 14161, 25942, 28322, 31501, 37387, 63002, 74774, 90797, 99127, 181594, 198254, 220507, 441014, 635579, 1271158, 1543549, 3087098, 10804843, 21609686]

約数ペア:

[(1, 21609686), (2, 10804843), (7, 3087098), (14, 1543549), (17, 1271158), (34, 635579), (49, 441014), (98, 220507), (109, 198254), (119, 181594), (218, 99127), (238, 90797), (289, 74774), (343, 63002), (578, 37387), (686, 31501), (763, 28322), (833, 25942), (1526, 14161), (1666, 12971), (1853, 11662), (2023, 10682), (3706, 5831), (4046, 5341)]