21490469

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3067}}^1$

素因数の和:3105

約数の個数: 24

約数和(自身を含む): 29379168

約数和(自身を除く): 7888699

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 3067, 7007, 21469, 33737, 39871, 150283, 236159, 279097, 438581, 1653113, 1953679, 3070067, 21490469]

約数ペア:

[(1, 21490469), (7, 3070067), (11, 1953679), (13, 1653113), (49, 438581), (77, 279097), (91, 236159), (143, 150283), (539, 39871), (637, 33737), (1001, 21469), (3067, 7007)]