257515024

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{1873}}^1$

素因数の和:2555

約数の個数: 40

約数和(自身を含む): 538415192

約数和(自身を除く): 280900168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 661, 1322, 1873, 2644, 3746, 5288, 7492, 8593, 10576, 14984, 17186, 24349, 29968, 34372, 48698, 68744, 97396, 137488, 194792, 389584, 1238053, 2476106, 4952212, 9904424, 16094689, 19808848, 32189378, 64378756, 128757512, 257515024]

約数ペア:

[(1, 257515024), (2, 128757512), (4, 64378756), (8, 32189378), (13, 19808848), (16, 16094689), (26, 9904424), (52, 4952212), (104, 2476106), (208, 1238053), (661, 389584), (1322, 194792), (1873, 137488), (2644, 97396), (3746, 68744), (5288, 48698), (7492, 34372), (8593, 29968), (10576, 24349), (14984, 17186)]