28239561

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{19489}}^1$

素因数の和:19525

約数の個数: 24

約数和(自身を含む): 48647040

約数和(自身を除く): 20407479

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 19489, 58467, 136423, 175401, 409269, 448247, 1227807, 1344741, 3137729, 4034223, 9413187, 28239561]

約数ペア:

[(1, 28239561), (3, 9413187), (7, 4034223), (9, 3137729), (21, 1344741), (23, 1227807), (63, 448247), (69, 409269), (161, 175401), (207, 136423), (483, 58467), (1449, 19489)]