81533277

素因数分解:

$3^3\times 7^1\times {\mathrm{641}}^1\times {\mathrm{673}}^1$

素因数の和:1330

約数の個数: 32

約数和(自身を含む): 138466560

約数和(自身を除く): 56933283

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 641, 673, 1923, 2019, 4487, 4711, 5769, 6057, 13461, 14133, 17307, 18171, 40383, 42399, 121149, 127197, 431393, 1294179, 3019751, 3882537, 9059253, 11647611, 27177759, 81533277]

約数ペア:

[(1, 81533277), (3, 27177759), (7, 11647611), (9, 9059253), (21, 3882537), (27, 3019751), (63, 1294179), (189, 431393), (641, 127197), (673, 121149), (1923, 42399), (2019, 40383), (4487, 18171), (4711, 17307), (5769, 14133), (6057, 13461)]