81220671

素因数分解:

$3^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{3803}}^1$

素因数の和:3932

約数の個数: 32

約数和(自身を含む): 138769920

約数和(自身を除く): 57549249

約数列:

[1, 3, 7, 9, 21, 27, 63, 113, 189, 339, 791, 1017, 2373, 3051, 3803, 7119, 11409, 21357, 26621, 34227, 79863, 102681, 239589, 429739, 718767, 1289217, 3008173, 3867651, 9024519, 11602953, 27073557, 81220671]

約数ペア:

[(1, 81220671), (3, 27073557), (7, 11602953), (9, 9024519), (21, 3867651), (27, 3008173), (63, 1289217), (113, 718767), (189, 429739), (339, 239589), (791, 102681), (1017, 79863), (2373, 34227), (3051, 26621), (3803, 21357), (7119, 11409)]