21253449

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{557}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 13030071

約数列:

[1, 3, 7, 21, 23, 69, 79, 161, 237, 483, 553, 557, 1659, 1671, 1817, 3899, 5451, 11697, 12719, 12811, 38157, 38433, 44003, 89677, 132009, 269031, 308021, 924063, 1012069, 3036207, 7084483, 21253449]

約数ペア:

[(1, 21253449), (3, 7084483), (7, 3036207), (21, 1012069), (23, 924063), (69, 308021), (79, 269031), (161, 132009), (237, 89677), (483, 44003), (553, 38433), (557, 38157), (1659, 12811), (1671, 12719), (1817, 11697), (3899, 5451)]