19996551

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{1427}}^1$

素因数の和:1612

約数の個数: 20

約数和(自身を含む): 30065112

約数和(自身を除く): 10068561

約数列:

[1, 3, 9, 27, 81, 173, 519, 1427, 1557, 4281, 4671, 12843, 14013, 38529, 115587, 246871, 740613, 2221839, 6665517, 19996551]

約数ペア:

[(1, 19996551), (3, 6665517), (9, 2221839), (27, 740613), (81, 246871), (173, 115587), (519, 38529), (1427, 14013), (1557, 12843), (4281, 4671)]