21980819

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1$

素因数の和:1066

約数の個数: 16

約数和(自身を含む): 26044416

約数和(自身を除く): 4063597

約数列:

[1, 7, 47, 71, 329, 497, 941, 3337, 6587, 23359, 44227, 66811, 309589, 467677, 3140117, 21980819]

約数ペア:

[(1, 21980819), (7, 3140117), (47, 467677), (71, 309589), (329, 66811), (497, 44227), (941, 23359), (3337, 6587)]