2639390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 5201280

約数和(自身を除く): 2561890

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 257, 395, 514, 790, 1027, 1285, 2054, 2570, 3341, 5135, 6682, 10270, 16705, 20303, 33410, 40606, 101515, 203030, 263939, 527878, 1319695, 2639390]

約数ペア:

[(1, 2639390), (2, 1319695), (5, 527878), (10, 263939), (13, 203030), (26, 101515), (65, 40606), (79, 33410), (130, 20303), (158, 16705), (257, 10270), (395, 6682), (514, 5135), (790, 3341), (1027, 2570), (1285, 2054)]