251495480

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{45233}}^1$

素因数の和:45383

約数の個数: 32

約数和(自身を含む): 569948400

約数和(自身を除く): 318452920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 45233, 90466, 180932, 226165, 361864, 452330, 904660, 1809320, 6287387, 12574774, 25149548, 31436935, 50299096, 62873870, 125747740, 251495480]

約数ペア:

[(1, 251495480), (2, 125747740), (4, 62873870), (5, 50299096), (8, 31436935), (10, 25149548), (20, 12574774), (40, 6287387), (139, 1809320), (278, 904660), (556, 452330), (695, 361864), (1112, 226165), (1390, 180932), (2780, 90466), (5560, 45233)]