81991455

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8581}}^1$

素因数の和:8616

約数の個数: 48

約数和(自身を含む): 164362464

約数和(自身を除く): 82371009

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 455, 637, 735, 1365, 1911, 3185, 8581, 9555, 25743, 42905, 60067, 111553, 128715, 180201, 300335, 334659, 420469, 557765, 780871, 901005, 1261407, 1673295, 2102345, 2342613, 3904355, 5466097, 6307035, 11713065, 16398291, 27330485, 81991455]

約数ペア:

[(1, 81991455), (3, 27330485), (5, 16398291), (7, 11713065), (13, 6307035), (15, 5466097), (21, 3904355), (35, 2342613), (39, 2102345), (49, 1673295), (65, 1261407), (91, 901005), (105, 780871), (147, 557765), (195, 420469), (245, 334659), (273, 300335), (455, 180201), (637, 128715), (735, 111553), (1365, 60067), (1911, 42905), (3185, 25743), (8581, 9555)]