20475345

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4003}}^1$

素因数の和:4053

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 16425519

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4003, 5115, 12009, 20015, 44033, 60045, 124093, 132099, 220165, 372279, 620465, 660495, 1365023, 1861395, 4095069, 6825115, 20475345]

約数ペア:

[(1, 20475345), (3, 6825115), (5, 4095069), (11, 1861395), (15, 1365023), (31, 660495), (33, 620465), (55, 372279), (93, 220165), (155, 132099), (165, 124093), (341, 60045), (465, 44033), (1023, 20015), (1705, 12009), (4003, 5115)]