21563883

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3251}}^1$

素因数の和:3335

約数の個数: 24

約数和(自身を含む): 34497216

約数和(自身を除く): 12933333

約数列:

[1, 3, 9, 11, 33, 67, 99, 201, 603, 737, 2211, 3251, 6633, 9753, 29259, 35761, 107283, 217817, 321849, 653451, 1960353, 2395987, 7187961, 21563883]

約数ペア:

[(1, 21563883), (3, 7187961), (9, 2395987), (11, 1960353), (33, 653451), (67, 321849), (99, 217817), (201, 107283), (603, 35761), (737, 29259), (2211, 9753), (3251, 6633)]