18898460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{134989}}^1$

素因数の和:135005

約数の個数: 24

約数和(自身を含む): 45356640

約数和(自身を除く): 26458180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 134989, 269978, 539956, 674945, 944923, 1349890, 1889846, 2699780, 3779692, 4724615, 9449230, 18898460]

約数ペア:

[(1, 18898460), (2, 9449230), (4, 4724615), (5, 3779692), (7, 2699780), (10, 1889846), (14, 1349890), (20, 944923), (28, 674945), (35, 539956), (70, 269978), (140, 134989)]