81247047

素因数分解:

$3^1\times 7^2\times {\mathrm{439}}^1\times {\mathrm{1259}}^1$

素因数の和:1715

約数の個数: 24

約数和(自身を含む): 126403200

約数和(自身を除く): 45156153

約数列:

[1, 3, 7, 21, 49, 147, 439, 1259, 1317, 3073, 3777, 8813, 9219, 21511, 26439, 61691, 64533, 185073, 552701, 1658103, 3868907, 11606721, 27082349, 81247047]

約数ペア:

[(1, 81247047), (3, 27082349), (7, 11606721), (21, 3868907), (49, 1658103), (147, 552701), (439, 185073), (1259, 64533), (1317, 61691), (3073, 26439), (3777, 21511), (8813, 9219)]