21493797

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1907}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 32802336

約数和(自身を除く): 11308539

約数列:

[1, 3, 13, 17, 39, 51, 221, 289, 663, 867, 1907, 3757, 5721, 11271, 24791, 32419, 74373, 97257, 421447, 551123, 1264341, 1653369, 7164599, 21493797]

約数ペア:

[(1, 21493797), (3, 7164599), (13, 1653369), (17, 1264341), (39, 551123), (51, 421447), (221, 97257), (289, 74373), (663, 32419), (867, 24791), (1907, 11271), (3757, 5721)]