256562787

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{643}}^1\times {\mathrm{787}}^1$

素因数の和:1459

約数の個数: 24

約数和(自身を含む): 371469504

約数和(自身を除く): 114906717

約数列:

[1, 3, 13, 39, 169, 507, 643, 787, 1929, 2361, 8359, 10231, 25077, 30693, 108667, 133003, 326001, 399009, 506041, 1518123, 6578533, 19735599, 85520929, 256562787]

約数ペア:

[(1, 256562787), (3, 85520929), (13, 19735599), (39, 6578533), (169, 1518123), (507, 506041), (643, 399009), (787, 326001), (1929, 133003), (2361, 108667), (8359, 30693), (10231, 25077)]