31978765

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1049}}^1$

素因数の和:1141

約数の個数: 32

約数和(自身を含む): 47980800

約数和(自身を除く): 16002035

約数列:

[1, 5, 7, 13, 35, 65, 67, 91, 335, 455, 469, 871, 1049, 2345, 4355, 5245, 6097, 7343, 13637, 30485, 36715, 68185, 70283, 95459, 351415, 477295, 491981, 913679, 2459905, 4568395, 6395753, 31978765]

約数ペア:

[(1, 31978765), (5, 6395753), (7, 4568395), (13, 2459905), (35, 913679), (65, 491981), (67, 477295), (91, 351415), (335, 95459), (455, 70283), (469, 68185), (871, 36715), (1049, 30485), (2345, 13637), (4355, 7343), (5245, 6097)]