18717215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{6421}}^1$

素因数の和:6490

約数の個数: 16

約数和(自身を含む): 24968736

約数和(自身を除く): 6251521

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 6421, 32105, 70631, 340313, 353155, 1701565, 3743443, 18717215]

約数ペア:

[(1, 18717215), (5, 3743443), (11, 1701565), (53, 353155), (55, 340313), (265, 70631), (583, 32105), (2915, 6421)]