243686680

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{7741}}^1$

素因数の和:8539

約数の個数: 32

約数和(自身を含む): 549062640

約数和(自身を除く): 305375960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 7741, 7870, 15482, 15740, 30964, 31480, 38705, 61928, 77410, 154820, 309640, 6092167, 12184334, 24368668, 30460835, 48737336, 60921670, 121843340, 243686680]

約数ペア:

[(1, 243686680), (2, 121843340), (4, 60921670), (5, 48737336), (8, 30460835), (10, 24368668), (20, 12184334), (40, 6092167), (787, 309640), (1574, 154820), (3148, 77410), (3935, 61928), (6296, 38705), (7741, 31480), (7870, 30964), (15482, 15740)]