20407923

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11732877

約数列:

[1, 3, 9, 23, 27, 59, 69, 177, 207, 531, 557, 621, 1357, 1593, 1671, 4071, 5013, 12213, 12811, 15039, 32863, 36639, 38433, 98589, 115299, 295767, 345897, 755849, 887301, 2267547, 6802641, 20407923]

約数ペア:

[(1, 20407923), (3, 6802641), (9, 2267547), (23, 887301), (27, 755849), (59, 345897), (69, 295767), (177, 115299), (207, 98589), (531, 38433), (557, 36639), (621, 32863), (1357, 15039), (1593, 12811), (1671, 12213), (4071, 5013)]