20148486460

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1\times {\mathrm{28201}}^1$

素因数の和:28606

約数の個数: 48

約数和(自身を含む): 42783562080

約数和(自身を除く): 22635075620

約数列:

[1, 2, 4, 5, 10, 20, 139, 257, 278, 514, 556, 695, 1028, 1285, 1390, 2570, 2780, 5140, 28201, 35723, 56402, 71446, 112804, 141005, 142892, 178615, 282010, 357230, 564020, 714460, 3919939, 7247657, 7839878, 14495314, 15679756, 19599695, 28990628, 36238285, 39199390, 72476570, 78398780, 144953140, 1007424323, 2014848646, 4029697292, 5037121615, 10074243230, 20148486460]

約数ペア:

[(1, 20148486460), (2, 10074243230), (4, 5037121615), (5, 4029697292), (10, 2014848646), (20, 1007424323), (139, 144953140), (257, 78398780), (278, 72476570), (514, 39199390), (556, 36238285), (695, 28990628), (1028, 19599695), (1285, 15679756), (1390, 14495314), (2570, 7839878), (2780, 7247657), (5140, 3919939), (28201, 714460), (35723, 564020), (56402, 357230), (71446, 282010), (112804, 178615), (141005, 142892)]