20297205

素因数分解:

$3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1987}}^1$

素因数の和:2225

約数の個数: 24

約数和(自身を含む): 35354592

約数和(自身を除く): 15057387

約数列:

[1, 3, 5, 9, 15, 45, 227, 681, 1135, 1987, 2043, 3405, 5961, 9935, 10215, 17883, 29805, 89415, 451049, 1353147, 2255245, 4059441, 6765735, 20297205]

約数ペア:

[(1, 20297205), (3, 6765735), (5, 4059441), (9, 2255245), (15, 1353147), (45, 451049), (227, 89415), (681, 29805), (1135, 17883), (1987, 10215), (2043, 9935), (3405, 5961)]