28687420

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1973}}^1$

素因数の和:2709

約数の個数: 24

約数和(自身を含む): 60357024

約数和(自身を除く): 31669604

約数列:

[1, 2, 4, 5, 10, 20, 727, 1454, 1973, 2908, 3635, 3946, 7270, 7892, 9865, 14540, 19730, 39460, 1434371, 2868742, 5737484, 7171855, 14343710, 28687420]

約数ペア:

[(1, 28687420), (2, 14343710), (4, 7171855), (5, 5737484), (10, 2868742), (20, 1434371), (727, 39460), (1454, 19730), (1973, 14540), (2908, 9865), (3635, 7892), (3946, 7270)]