21638834

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81349}}^1$

素因数の和:81377

約数の個数: 16

約数和(自身を含む): 39048000

約数和(自身を除く): 17409166

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 81349, 162698, 569443, 1138886, 1545631, 3091262, 10819417, 21638834]

約数ペア:

[(1, 21638834), (2, 10819417), (7, 3091262), (14, 1545631), (19, 1138886), (38, 569443), (133, 162698), (266, 81349)]