21320013

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49697}}^1$

素因数の和:49724

約数の個数: 16

約数和(自身を含む): 33397056

約数和(自身を除く): 12077043

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49697, 149091, 546667, 646061, 1640001, 1938183, 7106671, 21320013]

約数ペア:

[(1, 21320013), (3, 7106671), (11, 1938183), (13, 1640001), (33, 646061), (39, 546667), (143, 149091), (429, 49697)]