420888213

素因数分解:

$3^2\times {\mathrm{71}}^2\times {\mathrm{9277}}^1$

素因数の和:9425

約数の個数: 18

約数和(自身を含む): 616699382

約数和(自身を除く): 195811169

約数列:

[1, 3, 9, 71, 213, 639, 5041, 9277, 15123, 27831, 45369, 83493, 658667, 1976001, 5928003, 46765357, 140296071, 420888213]

約数ペア:

[(1, 420888213), (3, 140296071), (9, 46765357), (71, 5928003), (213, 1976001), (639, 658667), (5041, 83493), (9277, 45369), (15123, 27831)]