21006685

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1019}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 10327715

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1019, 1085, 2945, 4123, 5095, 7133, 19361, 20615, 31589, 35665, 96805, 135527, 157945, 221123, 600191, 677635, 1105615, 3000955, 4201337, 21006685]

約数ペア:

[(1, 21006685), (5, 4201337), (7, 3000955), (19, 1105615), (31, 677635), (35, 600191), (95, 221123), (133, 157945), (155, 135527), (217, 96805), (589, 35665), (665, 31589), (1019, 20615), (1085, 19361), (2945, 7133), (4123, 5095)]