21174904

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{733}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 41749920

約数和(自身を除く): 20575016

約数列:

[1, 2, 4, 8, 23, 46, 92, 157, 184, 314, 628, 733, 1256, 1466, 2932, 3611, 5864, 7222, 14444, 16859, 28888, 33718, 67436, 115081, 134872, 230162, 460324, 920648, 2646863, 5293726, 10587452, 21174904]

約数ペア:

[(1, 21174904), (2, 10587452), (4, 5293726), (8, 2646863), (23, 920648), (46, 460324), (92, 230162), (157, 134872), (184, 115081), (314, 67436), (628, 33718), (733, 28888), (1256, 16859), (1466, 14444), (2932, 7222), (3611, 5864)]