1778986782680

素因数分解:

$2^3\times 5^1\times {\mathrm{81883}}^1\times {\mathrm{543149}}^1$

素因数の和:625043

約数の個数: 32

約数和(自身を含む): 4002776514000

約数和(自身を除く): 2223789731320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 81883, 163766, 327532, 409415, 543149, 655064, 818830, 1086298, 1637660, 2172596, 2715745, 3275320, 4345192, 5431490, 10862980, 21725960, 44474669567, 88949339134, 177898678268, 222373347835, 355797356536, 444746695670, 889493391340, 1778986782680]

約数ペア:

[(1, 1778986782680), (2, 889493391340), (4, 444746695670), (5, 355797356536), (8, 222373347835), (10, 177898678268), (20, 88949339134), (40, 44474669567), (81883, 21725960), (163766, 10862980), (327532, 5431490), (409415, 4345192), (543149, 3275320), (655064, 2715745), (818830, 2172596), (1086298, 1637660)]