80720577

素因数分解:

$3^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1787}}^1$

素因数の和:2042

約数の個数: 32

約数和(自身を含む): 137318400

約数和(自身を除く): 56597823

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 239, 717, 1673, 1787, 2151, 5019, 5361, 6453, 12509, 15057, 16083, 37527, 45171, 48249, 112581, 337743, 427093, 1281279, 2989651, 3843837, 8968953, 11531511, 26906859, 80720577]

約数ペア:

[(1, 80720577), (3, 26906859), (7, 11531511), (9, 8968953), (21, 3843837), (27, 2989651), (63, 1281279), (189, 427093), (239, 337743), (717, 112581), (1673, 48249), (1787, 45171), (2151, 37527), (5019, 16083), (5361, 15057), (6453, 12509)]