18978273

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 30067200

約数和(自身を除く): 11088927

約数列:

[1, 3, 9, 17, 27, 51, 153, 173, 239, 459, 519, 717, 1557, 2151, 2941, 4063, 4671, 6453, 8823, 12189, 26469, 36567, 41347, 79407, 109701, 124041, 372123, 702899, 1116369, 2108697, 6326091, 18978273]

約数ペア:

[(1, 18978273), (3, 6326091), (9, 2108697), (17, 1116369), (27, 702899), (51, 372123), (153, 124041), (173, 109701), (239, 79407), (459, 41347), (519, 36567), (717, 26469), (1557, 12189), (2151, 8823), (2941, 6453), (4063, 4671)]