409363209

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{640631}}^1$

素因数の和:640708

約数の個数: 12

約数和(自身を含む): 599631552

約数和(自身を除く): 190268343

約数列:

[1, 3, 9, 71, 213, 639, 640631, 1921893, 5765679, 45484801, 136454403, 409363209]

約数ペア:

[(1, 409363209), (3, 136454403), (9, 45484801), (71, 5765679), (213, 1921893), (639, 640631)]