21789656

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20479}}^1$

素因数の和:20511

約数の個数: 32

約数和(自身を含む): 49152000

約数和(自身を除く): 27362344

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20479, 40958, 81916, 143353, 163832, 286706, 389101, 573412, 778202, 1146824, 1556404, 2723707, 3112808, 5447414, 10894828, 21789656]

約数ペア:

[(1, 21789656), (2, 10894828), (4, 5447414), (7, 3112808), (8, 2723707), (14, 1556404), (19, 1146824), (28, 778202), (38, 573412), (56, 389101), (76, 286706), (133, 163832), (152, 143353), (266, 81916), (532, 40958), (1064, 20479)]