19967990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40751}}^1$

素因数の和:40772

約数の個数: 24

約数和(自身を含む): 41811552

約数和(自身を除く): 21843562

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40751, 81502, 203755, 285257, 407510, 570514, 1426285, 1996799, 2852570, 3993598, 9983995, 19967990]

約数ペア:

[(1, 19967990), (2, 9983995), (5, 3993598), (7, 2852570), (10, 1996799), (14, 1426285), (35, 570514), (49, 407510), (70, 285257), (98, 203755), (245, 81502), (490, 40751)]