81269979

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{1913}}^1$

素因数の和:1964

約数の個数: 36

約数和(自身を含む): 133972344

約数和(自身を除く): 52702365

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 289, 357, 833, 867, 1913, 2023, 2499, 5739, 6069, 13391, 14161, 32521, 40173, 42483, 93737, 97563, 227647, 281211, 552857, 682941, 1593529, 1658571, 3869999, 4780587, 11609997, 27089993, 81269979]

約数ペア:

[(1, 81269979), (3, 27089993), (7, 11609997), (17, 4780587), (21, 3869999), (49, 1658571), (51, 1593529), (119, 682941), (147, 552857), (289, 281211), (357, 227647), (833, 97563), (867, 93737), (1913, 42483), (2023, 40173), (2499, 32521), (5739, 14161), (6069, 13391)]