19779561

素因数分解:

$3^2\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 29251040

約数和(自身を除く): 9471479

約数列:

[1, 3, 9, 97, 139, 163, 291, 417, 489, 873, 1251, 1467, 13483, 15811, 22657, 40449, 47433, 67971, 121347, 142299, 203913, 2197729, 6593187, 19779561]

約数ペア:

[(1, 19779561), (3, 6593187), (9, 2197729), (97, 203913), (139, 142299), (163, 121347), (291, 67971), (417, 47433), (489, 40449), (873, 22657), (1251, 15811), (1467, 13483)]