20768740

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7927}}^1$

素因数の和:8067

約数の個数: 24

約数和(自身を含む): 43952832

約数和(自身を除く): 23184092

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7927, 15854, 31708, 39635, 79270, 158540, 1038437, 2076874, 4153748, 5192185, 10384370, 20768740]

約数ペア:

[(1, 20768740), (2, 10384370), (4, 5192185), (5, 4153748), (10, 2076874), (20, 1038437), (131, 158540), (262, 79270), (524, 39635), (655, 31708), (1310, 15854), (2620, 7927)]