81709317

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:815

約数の個数: 40

約数和(自身を含む): 129634560

約数和(自身を除く): 47925243

約数列:

[1, 3, 9, 23, 27, 61, 69, 81, 183, 207, 549, 621, 719, 1403, 1647, 1863, 2157, 4209, 4941, 6471, 12627, 16537, 19413, 37881, 43859, 49611, 58239, 113643, 131577, 148833, 394731, 446499, 1008757, 1184193, 1339497, 3026271, 3552579, 9078813, 27236439, 81709317]

約数ペア:

[(1, 81709317), (3, 27236439), (9, 9078813), (23, 3552579), (27, 3026271), (61, 1339497), (69, 1184193), (81, 1008757), (183, 446499), (207, 394731), (549, 148833), (621, 131577), (719, 113643), (1403, 58239), (1647, 49611), (1863, 43859), (2157, 37881), (4209, 19413), (4941, 16537), (6471, 12627)]