20497480

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1223}}^1$

素因数の和:1653

約数の個数: 32

約数和(自身を含む): 46267200

約数和(自身を除く): 25769720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1223, 1676, 2095, 2446, 3352, 4190, 4892, 6115, 8380, 9784, 12230, 16760, 24460, 48920, 512437, 1024874, 2049748, 2562185, 4099496, 5124370, 10248740, 20497480]

約数ペア:

[(1, 20497480), (2, 10248740), (4, 5124370), (5, 4099496), (8, 2562185), (10, 2049748), (20, 1024874), (40, 512437), (419, 48920), (838, 24460), (1223, 16760), (1676, 12230), (2095, 9784), (2446, 8380), (3352, 6115), (4190, 4892)]