81271311

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{521}}^1$

素因数の和:727

約数の個数: 32

約数和(自身を含む): 123275520

約数和(自身を除く): 42004209

約数列:

[1, 3, 11, 29, 33, 87, 163, 319, 489, 521, 957, 1563, 1793, 4727, 5379, 5731, 14181, 15109, 17193, 45327, 51997, 84923, 155991, 166199, 254769, 498597, 934153, 2462767, 2802459, 7388301, 27090437, 81271311]

約数ペア:

[(1, 81271311), (3, 27090437), (11, 7388301), (29, 2802459), (33, 2462767), (87, 934153), (163, 498597), (319, 254769), (489, 166199), (521, 155991), (957, 84923), (1563, 51997), (1793, 45327), (4727, 17193), (5379, 15109), (5731, 14181)]