81752080

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2371}}^1$

素因数の和:2815

約数の個数: 40

約数和(自身を含む): 190594944

約数和(自身を除く): 108842864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 2155, 2371, 3448, 4310, 4742, 6896, 8620, 9484, 11855, 17240, 18968, 23710, 34480, 37936, 47420, 94840, 189680, 1021901, 2043802, 4087604, 5109505, 8175208, 10219010, 16350416, 20438020, 40876040, 81752080]

約数ペア:

[(1, 81752080), (2, 40876040), (4, 20438020), (5, 16350416), (8, 10219010), (10, 8175208), (16, 5109505), (20, 4087604), (40, 2043802), (80, 1021901), (431, 189680), (862, 94840), (1724, 47420), (2155, 37936), (2371, 34480), (3448, 23710), (4310, 18968), (4742, 17240), (6896, 11855), (8620, 9484)]