13018780

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4969}}^1$

素因数の和:5109

約数の個数: 24

約数和(自身を含む): 27553680

約数和(自身を除く): 14534900

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 4969, 9938, 19876, 24845, 49690, 99380, 650939, 1301878, 2603756, 3254695, 6509390, 13018780]

約数ペア:

[(1, 13018780), (2, 6509390), (4, 3254695), (5, 2603756), (10, 1301878), (20, 650939), (131, 99380), (262, 49690), (524, 24845), (655, 19876), (1310, 9938), (2620, 4969)]