19974220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142673}}^1$

素因数の和:142689

約数の個数: 24

約数和(自身を含む): 47938464

約数和(自身を除く): 27964244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142673, 285346, 570692, 713365, 998711, 1426730, 1997422, 2853460, 3994844, 4993555, 9987110, 19974220]

約数ペア:

[(1, 19974220), (2, 9987110), (4, 4993555), (5, 3994844), (7, 2853460), (10, 1997422), (14, 1426730), (20, 998711), (28, 713365), (35, 570692), (70, 285346), (140, 142673)]