28913517

素因数分解:

$3^4\times {\mathrm{491}}^1\times {\mathrm{727}}^1$

素因数の和:1230

約数の個数: 20

約数和(自身を含む): 43339296

約数和(自身を除く): 14425779

約数列:

[1, 3, 9, 27, 81, 491, 727, 1473, 2181, 4419, 6543, 13257, 19629, 39771, 58887, 356957, 1070871, 3212613, 9637839, 28913517]

約数ペア:

[(1, 28913517), (3, 9637839), (9, 3212613), (27, 1070871), (81, 356957), (491, 58887), (727, 39771), (1473, 19629), (2181, 13257), (4419, 6543)]