28228167

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 48048000

約数和(自身を除く): 19819833

約数列:

[1, 3, 9, 11, 19, 33, 43, 57, 99, 129, 171, 209, 349, 387, 473, 627, 817, 1047, 1419, 1881, 2451, 3141, 3839, 4257, 6631, 7353, 8987, 11517, 15007, 19893, 26961, 34551, 45021, 59679, 72941, 80883, 135063, 165077, 218823, 285133, 495231, 656469, 855399, 1485693, 2566197, 3136463, 9409389, 28228167]

約数ペア:

[(1, 28228167), (3, 9409389), (9, 3136463), (11, 2566197), (19, 1485693), (33, 855399), (43, 656469), (57, 495231), (99, 285133), (129, 218823), (171, 165077), (209, 135063), (349, 80883), (387, 72941), (473, 59679), (627, 45021), (817, 34551), (1047, 26961), (1419, 19893), (1881, 15007), (2451, 11517), (3141, 8987), (3839, 7353), (4257, 6631)]