21039887

素因数分解:

${\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 23639040

約数和(自身を除く): 2599153

約数列:

[1, 11, 53, 151, 239, 583, 1661, 2629, 8003, 12667, 36089, 88033, 139337, 396979, 1912717, 21039887]

約数ペア:

[(1, 21039887), (11, 1912717), (53, 396979), (151, 139337), (239, 88033), (583, 36089), (1661, 12667), (2629, 8003)]