17780440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8387}}^1$

素因数の和:8451

約数の個数: 32

約数和(自身を含む): 40765680

約数和(自身を除く): 22985240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8387, 16774, 33548, 41935, 67096, 83870, 167740, 335480, 444511, 889022, 1778044, 2222555, 3556088, 4445110, 8890220, 17780440]

約数ペア:

[(1, 17780440), (2, 8890220), (4, 4445110), (5, 3556088), (8, 2222555), (10, 1778044), (20, 889022), (40, 444511), (53, 335480), (106, 167740), (212, 83870), (265, 67096), (424, 41935), (530, 33548), (1060, 16774), (2120, 8387)]