21586768

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1987}}^1$

素因数の和:2099

約数の個数: 40

約数和(自身を含む): 48316352

約数和(自身を除く): 26729584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1987, 2716, 3974, 5432, 7948, 10864, 13909, 15896, 27818, 31792, 55636, 111272, 192739, 222544, 385478, 770956, 1349173, 1541912, 2698346, 3083824, 5396692, 10793384, 21586768]

約数ペア:

[(1, 21586768), (2, 10793384), (4, 5396692), (7, 3083824), (8, 2698346), (14, 1541912), (16, 1349173), (28, 770956), (56, 385478), (97, 222544), (112, 192739), (194, 111272), (388, 55636), (679, 31792), (776, 27818), (1358, 15896), (1552, 13909), (1987, 10864), (2716, 7948), (3974, 5432)]