27801580

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2731}}^1$

素因数の和:3249

約数の個数: 24

約数和(自身を含む): 58519440

約数和(自身を除く): 30717860

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 2731, 5090, 5462, 10180, 10924, 13655, 27310, 54620, 1390079, 2780158, 5560316, 6950395, 13900790, 27801580]

約数ペア:

[(1, 27801580), (2, 13900790), (4, 6950395), (5, 5560316), (10, 2780158), (20, 1390079), (509, 54620), (1018, 27310), (2036, 13655), (2545, 10924), (2731, 10180), (5090, 5462)]