81297748

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 168985600

約数和(自身を除く): 87687852

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 229, 409, 434, 458, 818, 868, 916, 1603, 1636, 2863, 3206, 5726, 6412, 7099, 11452, 12679, 14198, 25358, 28396, 49693, 50716, 88753, 93661, 99386, 177506, 187322, 198772, 355012, 374644, 655627, 1311254, 2622508, 2903491, 5806982, 11613964, 20324437, 40648874, 81297748]

約数ペア:

[(1, 81297748), (2, 40648874), (4, 20324437), (7, 11613964), (14, 5806982), (28, 2903491), (31, 2622508), (62, 1311254), (124, 655627), (217, 374644), (229, 355012), (409, 198772), (434, 187322), (458, 177506), (818, 99386), (868, 93661), (916, 88753), (1603, 50716), (1636, 49693), (2863, 28396), (3206, 25358), (5726, 14198), (6412, 12679), (7099, 11452)]