21361328

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32563}}^1$

素因数の和:32612

約数の個数: 20

約数和(自身を含む): 42398328

約数和(自身を除く): 21037000

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32563, 65126, 130252, 260504, 521008, 1335083, 2670166, 5340332, 10680664, 21361328]

約数ペア:

[(1, 21361328), (2, 10680664), (4, 5340332), (8, 2670166), (16, 1335083), (41, 521008), (82, 260504), (164, 130252), (328, 65126), (656, 32563)]