21056307

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1\times {\mathrm{347}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 28563840

約数和(自身を除く): 7507533

約数列:

[1, 3, 113, 179, 339, 347, 537, 1041, 20227, 39211, 60681, 62113, 117633, 186339, 7018769, 21056307]

約数ペア:

[(1, 21056307), (3, 7018769), (113, 186339), (179, 117633), (339, 62113), (347, 60681), (537, 39211), (1041, 20227)]