21209361

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{359}}^1\times {\mathrm{419}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 29030400

約数和(自身を除く): 7821039

約数列:

[1, 3, 47, 141, 359, 419, 1077, 1257, 16873, 19693, 50619, 59079, 150421, 451263, 7069787, 21209361]

約数ペア:

[(1, 21209361), (3, 7069787), (47, 451263), (141, 150421), (359, 59079), (419, 50619), (1077, 19693), (1257, 16873)]