78812840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27751}}^1$

素因数の和:27833

約数の個数: 32

約数和(自身を含む): 179832960

約数和(自身を除く): 101020120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 27751, 55502, 111004, 138755, 222008, 277510, 555020, 1110040, 1970321, 3940642, 7881284, 9851605, 15762568, 19703210, 39406420, 78812840]

約数ペア:

[(1, 78812840), (2, 39406420), (4, 19703210), (5, 15762568), (8, 9851605), (10, 7881284), (20, 3940642), (40, 1970321), (71, 1110040), (142, 555020), (284, 277510), (355, 222008), (568, 138755), (710, 111004), (1420, 55502), (2840, 27751)]