21182187

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 32997888

約数和(自身を除く): 11815701

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 731, 743, 1677, 2193, 2229, 9503, 9659, 12631, 28509, 28977, 31949, 37893, 95847, 164203, 415337, 492609, 543133, 1246011, 1629399, 7060729, 21182187]

約数ペア:

[(1, 21182187), (3, 7060729), (13, 1629399), (17, 1246011), (39, 543133), (43, 492609), (51, 415337), (129, 164203), (221, 95847), (559, 37893), (663, 31949), (731, 28977), (743, 28509), (1677, 12631), (2193, 9659), (2229, 9503)]