21221993

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{569}}^1$

素因数の和:752

約数の個数: 16

約数和(自身を含む): 24259200

約数和(自身を除く): 3037207

約数列:

[1, 13, 19, 151, 247, 569, 1963, 2869, 7397, 10811, 37297, 85919, 140543, 1116947, 1632461, 21221993]

約数ペア:

[(1, 21221993), (13, 1632461), (19, 1116947), (151, 140543), (247, 85919), (569, 37297), (1963, 10811), (2869, 7397)]