289174990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{20789}}^1$

素因数の和:20916

約数の個数: 32

約数和(自身を含む): 565820640

約数和(自身を除く): 276645650

約数列:

[1, 2, 5, 10, 13, 26, 65, 107, 130, 214, 535, 1070, 1391, 2782, 6955, 13910, 20789, 41578, 103945, 207890, 270257, 540514, 1351285, 2224423, 2702570, 4448846, 11122115, 22244230, 28917499, 57834998, 144587495, 289174990]

約数ペア:

[(1, 289174990), (2, 144587495), (5, 57834998), (10, 28917499), (13, 22244230), (26, 11122115), (65, 4448846), (107, 2702570), (130, 2224423), (214, 1351285), (535, 540514), (1070, 270257), (1391, 207890), (2782, 103945), (6955, 41578), (13910, 20789)]