19666220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140473}}^1$

素因数の和:140489

約数の個数: 24

約数和(自身を含む): 47199264

約数和(自身を除く): 27533044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140473, 280946, 561892, 702365, 983311, 1404730, 1966622, 2809460, 3933244, 4916555, 9833110, 19666220]

約数ペア:

[(1, 19666220), (2, 9833110), (4, 4916555), (5, 3933244), (7, 2809460), (10, 1966622), (14, 1404730), (20, 983311), (28, 702365), (35, 561892), (70, 280946), (140, 140473)]