21255999

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2833}}^1$

素因数の和:2938

約数の個数: 16

約数和(自身を含む): 29518944

約数和(自身を除く): 8262945

約数列:

[1, 3, 41, 61, 123, 183, 2501, 2833, 7503, 8499, 116153, 172813, 348459, 518439, 7085333, 21255999]

約数ペア:

[(1, 21255999), (3, 7085333), (41, 518439), (61, 348459), (123, 172813), (183, 116153), (2501, 8499), (2833, 7503)]