81780273

素因数分解:

$3^4\times {\mathrm{281}}^1\times {\mathrm{3593}}^1$

素因数の和:3886

約数の個数: 20

約数和(自身を含む): 122634468

約数和(自身を除く): 40854195

約数列:

[1, 3, 9, 27, 81, 281, 843, 2529, 3593, 7587, 10779, 22761, 32337, 97011, 291033, 1009633, 3028899, 9086697, 27260091, 81780273]

約数ペア:

[(1, 81780273), (3, 27260091), (9, 9086697), (27, 3028899), (81, 1009633), (281, 291033), (843, 97011), (2529, 32337), (3593, 22761), (7587, 10779)]