21380706

素因数分解:

$2^1\times 3^3\times {\mathrm{599}}^1\times {\mathrm{661}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 47664000

約数和(自身を除く): 26283294

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 599, 661, 1198, 1322, 1797, 1983, 3594, 3966, 5391, 5949, 10782, 11898, 16173, 17847, 32346, 35694, 395939, 791878, 1187817, 2375634, 3563451, 7126902, 10690353, 21380706]

約数ペア:

[(1, 21380706), (2, 10690353), (3, 7126902), (6, 3563451), (9, 2375634), (18, 1187817), (27, 791878), (54, 395939), (599, 35694), (661, 32346), (1198, 17847), (1322, 16173), (1797, 11898), (1983, 10782), (3594, 5949), (3966, 5391)]