16591281

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 26323968

約数和(自身を除く): 9732687

約数列:

[1, 3, 7, 21, 37, 111, 131, 163, 259, 393, 489, 777, 917, 1141, 2751, 3423, 4847, 6031, 14541, 18093, 21353, 33929, 42217, 64059, 101787, 126651, 149471, 448413, 790061, 2370183, 5530427, 16591281]

約数ペア:

[(1, 16591281), (3, 5530427), (7, 2370183), (21, 790061), (37, 448413), (111, 149471), (131, 126651), (163, 101787), (259, 64059), (393, 42217), (489, 33929), (777, 21353), (917, 18093), (1141, 14541), (2751, 6031), (3423, 4847)]