20968233

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1321}}^1$

素因数の和:1385

約数の個数: 32

約数和(自身を含む): 33758592

約数和(自身を除く): 12790359

約数列:

[1, 3, 11, 13, 33, 37, 39, 111, 143, 407, 429, 481, 1221, 1321, 1443, 3963, 5291, 14531, 15873, 17173, 43593, 48877, 51519, 146631, 188903, 537647, 566709, 635401, 1612941, 1906203, 6989411, 20968233]

約数ペア:

[(1, 20968233), (3, 6989411), (11, 1906203), (13, 1612941), (33, 635401), (37, 566709), (39, 537647), (111, 188903), (143, 146631), (407, 51519), (429, 48877), (481, 43593), (1221, 17173), (1321, 15873), (1443, 14531), (3963, 5291)]