81647379

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 141972480

約数和(自身を除く): 60325101

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 99, 103, 153, 157, 187, 297, 309, 459, 471, 561, 927, 1133, 1413, 1683, 1727, 1751, 2669, 2781, 3399, 4239, 5049, 5181, 5253, 8007, 10197, 15543, 15759, 16171, 19261, 24021, 29359, 30591, 46629, 47277, 48513, 57783, 72063, 88077, 145539, 173349, 177881, 264231, 274907, 436617, 520047, 533643, 792693, 824721, 1600929, 2474163, 3023977, 4802787, 7422489, 9071931, 27215793, 81647379]

約数ペア:

[(1, 81647379), (3, 27215793), (9, 9071931), (11, 7422489), (17, 4802787), (27, 3023977), (33, 2474163), (51, 1600929), (99, 824721), (103, 792693), (153, 533643), (157, 520047), (187, 436617), (297, 274907), (309, 264231), (459, 177881), (471, 173349), (561, 145539), (927, 88077), (1133, 72063), (1413, 57783), (1683, 48513), (1727, 47277), (1751, 46629), (2669, 30591), (2781, 29359), (3399, 24021), (4239, 19261), (5049, 16171), (5181, 15759), (5253, 15543), (8007, 10197)]