212589

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 349440

約数和(自身を除く): 136851

約数列:

[1, 3, 9, 13, 23, 39, 69, 79, 117, 207, 237, 299, 711, 897, 1027, 1817, 2691, 3081, 5451, 9243, 16353, 23621, 70863, 212589]

約数ペア:

[(1, 212589), (3, 70863), (9, 23621), (13, 16353), (23, 9243), (39, 5451), (69, 3081), (79, 2691), (117, 1817), (207, 1027), (237, 897), (299, 711)]