320351521

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 392652288

約数和(自身を除く): 72300767

約数列:

[1, 7, 23, 73, 97, 161, 281, 511, 679, 1679, 1967, 2231, 6463, 7081, 11753, 15617, 20513, 27257, 45241, 49567, 143591, 162863, 190799, 471799, 626911, 1140041, 1989761, 3302593, 4388377, 13928327, 45764503, 320351521]

約数ペア:

[(1, 320351521), (7, 45764503), (23, 13928327), (73, 4388377), (97, 3302593), (161, 1989761), (281, 1140041), (511, 626911), (679, 471799), (1679, 190799), (1967, 162863), (2231, 143591), (6463, 49567), (7081, 45241), (11753, 27257), (15617, 20513)]