81890146

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:970

約数の個数: 32

約数和(自身を含む): 137047680

約数和(自身を除く): 55157534

約数列:

[1, 2, 13, 26, 43, 86, 89, 178, 559, 823, 1118, 1157, 1646, 2314, 3827, 7654, 10699, 21398, 35389, 49751, 70778, 73247, 99502, 146494, 460057, 920114, 952211, 1904422, 3149621, 6299242, 40945073, 81890146]

約数ペア:

[(1, 81890146), (2, 40945073), (13, 6299242), (26, 3149621), (43, 1904422), (86, 952211), (89, 920114), (178, 460057), (559, 146494), (823, 99502), (1118, 73247), (1157, 70778), (1646, 49751), (2314, 35389), (3827, 21398), (7654, 10699)]