66166780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23801}}^1$

素因数の和:23949

約数の個数: 24

約数和(自身を含む): 139955760

約数和(自身を除く): 73788980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 23801, 47602, 95204, 119005, 238010, 476020, 3308339, 6616678, 13233356, 16541695, 33083390, 66166780]

約数ペア:

[(1, 66166780), (2, 33083390), (4, 16541695), (5, 13233356), (10, 6616678), (20, 3308339), (139, 476020), (278, 238010), (556, 119005), (695, 95204), (1390, 47602), (2780, 23801)]