20081720

素因数分解:

$2^3\times 5^1\times {\mathrm{502043}}^1$

素因数の和:502054

約数の個数: 16

約数和(自身を含む): 45183960

約数和(自身を除く): 25102240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 502043, 1004086, 2008172, 2510215, 4016344, 5020430, 10040860, 20081720]

約数ペア:

[(1, 20081720), (2, 10040860), (4, 5020430), (5, 4016344), (8, 2510215), (10, 2008172), (20, 1004086), (40, 502043)]