19767020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10861}}^1$

素因数の和:10890

約数の個数: 48

約数和(自身を含む): 51094848

約数和(自身を除く): 31327828

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10861, 21722, 43444, 54305, 76027, 108610, 141193, 152054, 217220, 282386, 304108, 380135, 564772, 705965, 760270, 988351, 1411930, 1520540, 1976702, 2823860, 3953404, 4941755, 9883510, 19767020]

約数ペア:

[(1, 19767020), (2, 9883510), (4, 4941755), (5, 3953404), (7, 2823860), (10, 1976702), (13, 1520540), (14, 1411930), (20, 988351), (26, 760270), (28, 705965), (35, 564772), (52, 380135), (65, 304108), (70, 282386), (91, 217220), (130, 152054), (140, 141193), (182, 108610), (260, 76027), (364, 54305), (455, 43444), (910, 21722), (1820, 10861)]