19891311

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{1481}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 29960112

約数和(自身を除く): 10068801

約数列:

[1, 3, 11, 33, 37, 111, 121, 363, 407, 1221, 1481, 4443, 4477, 13431, 16291, 48873, 54797, 164391, 179201, 537603, 602767, 1808301, 6630437, 19891311]

約数ペア:

[(1, 19891311), (3, 6630437), (11, 1808301), (33, 602767), (37, 537603), (111, 179201), (121, 164391), (363, 54797), (407, 48873), (1221, 16291), (1481, 13431), (4443, 4477)]