1645781680

素因数分解:

$2^4\times 5^1\times {\mathrm{4481}}^1\times {\mathrm{4591}}^1$

素因数の和:9085

約数の個数: 40

約数和(自身を含む): 3828129984

約数和(自身を除く): 2182348304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4481, 4591, 8962, 9182, 17924, 18364, 22405, 22955, 35848, 36728, 44810, 45910, 71696, 73456, 89620, 91820, 179240, 183640, 358480, 367280, 20572271, 41144542, 82289084, 102861355, 164578168, 205722710, 329156336, 411445420, 822890840, 1645781680]

約数ペア:

[(1, 1645781680), (2, 822890840), (4, 411445420), (5, 329156336), (8, 205722710), (10, 164578168), (16, 102861355), (20, 82289084), (40, 41144542), (80, 20572271), (4481, 367280), (4591, 358480), (8962, 183640), (9182, 179240), (17924, 91820), (18364, 89620), (22405, 73456), (22955, 71696), (35848, 45910), (36728, 44810)]