21119697

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13723}}^1$

素因数の和:13754

約数の個数: 20

約数和(自身を含む): 33212080

約数和(自身を除く): 12092383

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13723, 41169, 123507, 260737, 370521, 782211, 1111563, 2346633, 7039899, 21119697]

約数ペア:

[(1, 21119697), (3, 7039899), (9, 2346633), (19, 1111563), (27, 782211), (57, 370521), (81, 260737), (171, 123507), (513, 41169), (1539, 13723)]