20499968

素因数分解:

$2^9\times {\mathrm{40039}}^1$

素因数の和:40057

約数の個数: 20

約数和(自身を含む): 40960920

約数和(自身を除く): 20460952

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 40039, 80078, 160156, 320312, 640624, 1281248, 2562496, 5124992, 10249984, 20499968]

約数ペア:

[(1, 20499968), (2, 10249984), (4, 5124992), (8, 2562496), (16, 1281248), (32, 640624), (64, 320312), (128, 160156), (256, 80078), (512, 40039)]