7140340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21001}}^1$

素因数の和:21027

約数の個数: 24

約数和(自身を含む): 15877512

約数和(自身を除く): 8737172

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 21001, 42002, 84004, 105005, 210010, 357017, 420020, 714034, 1428068, 1785085, 3570170, 7140340]

約数ペア:

[(1, 7140340), (2, 3570170), (4, 1785085), (5, 1428068), (10, 714034), (17, 420020), (20, 357017), (34, 210010), (68, 105005), (85, 84004), (170, 42002), (340, 21001)]