19954420

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3709}}^1$

素因数の和:3987

約数の個数: 24

約数和(自身を含む): 42071400

約数和(自身を除く): 22116980

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3709, 5380, 7418, 14836, 18545, 37090, 74180, 997721, 1995442, 3990884, 4988605, 9977210, 19954420]

約数ペア:

[(1, 19954420), (2, 9977210), (4, 4988605), (5, 3990884), (10, 1995442), (20, 997721), (269, 74180), (538, 37090), (1076, 18545), (1345, 14836), (2690, 7418), (3709, 5380)]