21684796

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{103}}^2$

素因数の和:290

約数の個数: 36

約数和(自身を含む): 44394672

約数和(自身を除く): 22709876

約数列:

[1, 2, 4, 7, 14, 28, 73, 103, 146, 206, 292, 412, 511, 721, 1022, 1442, 2044, 2884, 7519, 10609, 15038, 21218, 30076, 42436, 52633, 74263, 105266, 148526, 210532, 297052, 774457, 1548914, 3097828, 5421199, 10842398, 21684796]

約数ペア:

[(1, 21684796), (2, 10842398), (4, 5421199), (7, 3097828), (14, 1548914), (28, 774457), (73, 297052), (103, 210532), (146, 148526), (206, 105266), (292, 74263), (412, 52633), (511, 42436), (721, 30076), (1022, 21218), (1442, 15038), (2044, 10609), (2884, 7519)]