21647248

素因数分解:

$2^4\times 7^1\times {\mathrm{347}}^1\times {\mathrm{557}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 48157632

約数和(自身を除く): 26510384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 347, 557, 694, 1114, 1388, 2228, 2429, 2776, 3899, 4456, 4858, 5552, 7798, 8912, 9716, 15596, 19432, 31192, 38864, 62384, 193279, 386558, 773116, 1352953, 1546232, 2705906, 3092464, 5411812, 10823624, 21647248]

約数ペア:

[(1, 21647248), (2, 10823624), (4, 5411812), (7, 3092464), (8, 2705906), (14, 1546232), (16, 1352953), (28, 773116), (56, 386558), (112, 193279), (347, 62384), (557, 38864), (694, 31192), (1114, 19432), (1388, 15596), (2228, 9716), (2429, 8912), (2776, 7798), (3899, 5552), (4456, 4858)]