20941921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20921}}^1$

素因数の和:20952

約数の個数: 16

約数和(自身を含む): 28119168

約数和(自身を除く): 7177247

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 20921, 146447, 230131, 271973, 1610917, 1903811, 2991703, 20941921]

約数ペア:

[(1, 20941921), (7, 2991703), (11, 1903811), (13, 1610917), (77, 271973), (91, 230131), (143, 146447), (1001, 20921)]