19940499

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{1423}}^1$

素因数の和:1608

約数の個数: 20

約数和(自身を含む): 29980896

約数和(自身を除く): 10040397

約数列:

[1, 3, 9, 27, 81, 173, 519, 1423, 1557, 4269, 4671, 12807, 14013, 38421, 115263, 246179, 738537, 2215611, 6646833, 19940499]

約数ペア:

[(1, 19940499), (3, 6646833), (9, 2215611), (27, 738537), (81, 246179), (173, 115263), (519, 38421), (1423, 14013), (1557, 12807), (4269, 4671)]