121890020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{870643}}^1$

素因数の和:870659

約数の個数: 24

約数和(自身を含む): 292536384

約数和(自身を除く): 170646364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 870643, 1741286, 3482572, 4353215, 6094501, 8706430, 12189002, 17412860, 24378004, 30472505, 60945010, 121890020]

約数ペア:

[(1, 121890020), (2, 60945010), (4, 30472505), (5, 24378004), (7, 17412860), (10, 12189002), (14, 8706430), (20, 6094501), (28, 4353215), (35, 3482572), (70, 1741286), (140, 870643)]