20638527

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4447}}^1$

素因数の和:4487

約数の個数: 32

約数和(自身を含む): 35868672

約数和(自身を除く): 15230145

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4447, 4641, 13341, 31129, 57811, 75599, 93387, 173433, 226797, 404677, 529193, 982787, 1214031, 1587579, 2948361, 6879509, 20638527]

約数ペア:

[(1, 20638527), (3, 6879509), (7, 2948361), (13, 1587579), (17, 1214031), (21, 982787), (39, 529193), (51, 404677), (91, 226797), (119, 173433), (221, 93387), (273, 75599), (357, 57811), (663, 31129), (1547, 13341), (4447, 4641)]