21290936

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1759}}^1$

素因数の和:1871

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21477064

約数列:

[1, 2, 4, 8, 17, 34, 68, 89, 136, 178, 356, 712, 1513, 1759, 3026, 3518, 6052, 7036, 12104, 14072, 29903, 59806, 119612, 156551, 239224, 313102, 626204, 1252408, 2661367, 5322734, 10645468, 21290936]

約数ペア:

[(1, 21290936), (2, 10645468), (4, 5322734), (8, 2661367), (17, 1252408), (34, 626204), (68, 313102), (89, 239224), (136, 156551), (178, 119612), (356, 59806), (712, 29903), (1513, 14072), (1759, 12104), (3026, 7036), (3518, 6052)]