18778973890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26449259}}^1$

素因数の和:26449337

約数の個数: 16

約数和(自身を含む): 34278240960

約数和(自身を除く): 15499267070

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 26449259, 52898518, 132246295, 264492590, 1877897389, 3755794778, 9389486945, 18778973890]

約数ペア:

[(1, 18778973890), (2, 9389486945), (5, 3755794778), (10, 1877897389), (71, 264492590), (142, 132246295), (355, 52898518), (710, 26449259)]