28399509

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{8741}}^1$

素因数の和:8785

約数の個数: 18

約数和(自身を含む): 43299126

約数和(自身を除く): 14899617

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 8741, 26223, 78669, 166079, 498237, 1494711, 3155501, 9466503, 28399509]

約数ペア:

[(1, 28399509), (3, 9466503), (9, 3155501), (19, 1494711), (57, 498237), (171, 166079), (361, 78669), (1083, 26223), (3249, 8741)]