20894355

素因数分解:

$3^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{593}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 18024525

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 243, 261, 405, 435, 593, 783, 1215, 1305, 1779, 2349, 2965, 3915, 5337, 7047, 8895, 11745, 16011, 17197, 26685, 35235, 48033, 51591, 80055, 85985, 144099, 154773, 240165, 257955, 464319, 720495, 773865, 1392957, 2321595, 4178871, 6964785, 20894355]

約数ペア:

[(1, 20894355), (3, 6964785), (5, 4178871), (9, 2321595), (15, 1392957), (27, 773865), (29, 720495), (45, 464319), (81, 257955), (87, 240165), (135, 154773), (145, 144099), (243, 85985), (261, 80055), (405, 51591), (435, 48033), (593, 35235), (783, 26685), (1215, 17197), (1305, 16011), (1779, 11745), (2349, 8895), (2965, 7047), (3915, 5337)]