20976615

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1367}}^1$

素因数の和:1420

約数の個数: 48

約数和(自身を含む): 40974336

約数和(自身を除く): 19997721

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1367, 1395, 1705, 3069, 4101, 5115, 6835, 12303, 15037, 15345, 20505, 42377, 45111, 61515, 75185, 127131, 135333, 211885, 225555, 381393, 466147, 635655, 676665, 1398441, 1906965, 2330735, 4195323, 6992205, 20976615]

約数ペア:

[(1, 20976615), (3, 6992205), (5, 4195323), (9, 2330735), (11, 1906965), (15, 1398441), (31, 676665), (33, 635655), (45, 466147), (55, 381393), (93, 225555), (99, 211885), (155, 135333), (165, 127131), (279, 75185), (341, 61515), (465, 45111), (495, 42377), (1023, 20505), (1367, 15345), (1395, 15037), (1705, 12303), (3069, 6835), (4101, 5115)]