18417940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{40039}}^1$

素因数の和:40071

約数の個数: 24

約数和(自身を含む): 40360320

約数和(自身を除く): 21942380

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 40039, 80078, 160156, 200195, 400390, 800780, 920897, 1841794, 3683588, 4604485, 9208970, 18417940]

約数ペア:

[(1, 18417940), (2, 9208970), (4, 4604485), (5, 3683588), (10, 1841794), (20, 920897), (23, 800780), (46, 400390), (92, 200195), (115, 160156), (230, 80078), (460, 40039)]