245014780

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{17729}}^1$

素因数の和:18429

約数の個数: 24

約数和(自身を含む): 515304720

約数和(自身を除く): 270289940

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 6910, 13820, 17729, 35458, 70916, 88645, 177290, 354580, 12250739, 24501478, 49002956, 61253695, 122507390, 245014780]

約数ペア:

[(1, 245014780), (2, 122507390), (4, 61253695), (5, 49002956), (10, 24501478), (20, 12250739), (691, 354580), (1382, 177290), (2764, 88645), (3455, 70916), (6910, 35458), (13820, 17729)]