18860215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2467}}^1$

素因数の和:2622

約数の個数: 16

約数和(自身を含む): 24877440

約数和(自身を除く): 6017225

約数列:

[1, 5, 11, 55, 139, 695, 1529, 2467, 7645, 12335, 27137, 135685, 342913, 1714565, 3772043, 18860215]

約数ペア:

[(1, 18860215), (5, 3772043), (11, 1714565), (55, 342913), (139, 135685), (695, 27137), (1529, 12335), (2467, 7645)]