20987504

素因数分解:

$2^4\times {\mathrm{379}}^1\times {\mathrm{3461}}^1$

素因数の和:3848

約数の個数: 20

約数和(自身を含む): 40782360

約数和(自身を除く): 19794856

約数列:

[1, 2, 4, 8, 16, 379, 758, 1516, 3032, 3461, 6064, 6922, 13844, 27688, 55376, 1311719, 2623438, 5246876, 10493752, 20987504]

約数ペア:

[(1, 20987504), (2, 10493752), (4, 5246876), (8, 2623438), (16, 1311719), (379, 55376), (758, 27688), (1516, 13844), (3032, 6922), (3461, 6064)]