19508528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1321}}^1$

素因数の和:1413

約数の個数: 40

約数和(自身を含む): 41309856

約数和(自身を除く): 21801328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1321, 1846, 2642, 3692, 5284, 7384, 10568, 14768, 17173, 21136, 34346, 68692, 93791, 137384, 187582, 274768, 375164, 750328, 1219283, 1500656, 2438566, 4877132, 9754264, 19508528]

約数ペア:

[(1, 19508528), (2, 9754264), (4, 4877132), (8, 2438566), (13, 1500656), (16, 1219283), (26, 750328), (52, 375164), (71, 274768), (104, 187582), (142, 137384), (208, 93791), (284, 68692), (568, 34346), (923, 21136), (1136, 17173), (1321, 14768), (1846, 10568), (2642, 7384), (3692, 5284)]