21021581

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{883}}^1$

素因数の和:1088

約数の個数: 16

約数和(自身を含む): 25459200

約数和(自身を除く): 4437619

約数列:

[1, 7, 19, 133, 179, 883, 1253, 3401, 6181, 16777, 23807, 117439, 158057, 1106399, 3003083, 21021581]

約数ペア:

[(1, 21021581), (7, 3003083), (19, 1106399), (133, 158057), (179, 117439), (883, 23807), (1253, 16777), (3401, 6181)]