20786320

素因数分解:

$2^4\times 5^1\times {\mathrm{259829}}^1$

素因数の和:259842

約数の個数: 20

約数和(自身を含む): 48328380

約数和(自身を除く): 27542060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259829, 519658, 1039316, 1299145, 2078632, 2598290, 4157264, 5196580, 10393160, 20786320]

約数ペア:

[(1, 20786320), (2, 10393160), (4, 5196580), (5, 4157264), (8, 2598290), (10, 2078632), (16, 1299145), (20, 1039316), (40, 519658), (80, 259829)]