18961821

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1949}}^1$

素因数の和:2025

約数の個数: 24

約数和(自身を含む): 29203200

約数和(自身を除く): 10241379

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 1949, 3243, 5847, 9729, 17541, 44827, 91603, 134481, 274809, 403443, 824427, 2106869, 6320607, 18961821]

約数ペア:

[(1, 18961821), (3, 6320607), (9, 2106869), (23, 824427), (47, 403443), (69, 274809), (141, 134481), (207, 91603), (423, 44827), (1081, 17541), (1949, 9729), (3243, 5847)]