21955257

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:477

約数の個数: 24

約数和(自身を含む): 32572800

約数和(自身を除く): 10617543

約数列:

[1, 3, 9, 59, 173, 177, 239, 519, 531, 717, 1557, 2151, 10207, 14101, 30621, 41347, 42303, 91863, 124041, 126909, 372123, 2439473, 7318419, 21955257]

約数ペア:

[(1, 21955257), (3, 7318419), (9, 2439473), (59, 372123), (173, 126909), (177, 124041), (239, 91863), (519, 42303), (531, 41347), (717, 30621), (1557, 14101), (2151, 10207)]