21081808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{119783}}^1$

素因数の和:119802

約数の個数: 20

約数和(自身を含む): 44559648

約数和(自身を除く): 23477840

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 119783, 239566, 479132, 958264, 1317613, 1916528, 2635226, 5270452, 10540904, 21081808]

約数ペア:

[(1, 21081808), (2, 10540904), (4, 5270452), (8, 2635226), (11, 1916528), (16, 1317613), (22, 958264), (44, 479132), (88, 239566), (176, 119783)]