21073936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1427}}^1$

素因数の和:1519

約数の個数: 40

約数和(自身を含む): 44622144

約数和(自身を除く): 23548208

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1427, 1846, 2854, 3692, 5708, 7384, 11416, 14768, 18551, 22832, 37102, 74204, 101317, 148408, 202634, 296816, 405268, 810536, 1317121, 1621072, 2634242, 5268484, 10536968, 21073936]

約数ペア:

[(1, 21073936), (2, 10536968), (4, 5268484), (8, 2634242), (13, 1621072), (16, 1317121), (26, 810536), (52, 405268), (71, 296816), (104, 202634), (142, 148408), (208, 101317), (284, 74204), (568, 37102), (923, 22832), (1136, 18551), (1427, 14768), (1846, 11416), (2854, 7384), (3692, 5708)]