21180668

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{1217}}^1$

素因数の和:1469

約数の個数: 24

約数和(自身を含む): 39219600

約数和(自身を除く): 18038932

約数列:

[1, 2, 4, 19, 38, 76, 229, 458, 916, 1217, 2434, 4351, 4868, 8702, 17404, 23123, 46246, 92492, 278693, 557386, 1114772, 5295167, 10590334, 21180668]

約数ペア:

[(1, 21180668), (2, 10590334), (4, 5295167), (19, 1114772), (38, 557386), (76, 278693), (229, 92492), (458, 46246), (916, 23123), (1217, 17404), (2434, 8702), (4351, 4868)]