28252107

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 18922293

約数列:

[1, 3, 9, 13, 19, 39, 57, 71, 117, 171, 179, 213, 247, 537, 639, 741, 923, 1349, 1611, 2223, 2327, 2769, 3401, 4047, 6981, 8307, 10203, 12141, 12709, 17537, 20943, 30609, 38127, 44213, 52611, 114381, 132639, 157833, 165217, 241471, 397917, 495651, 724413, 1486953, 2173239, 3139123, 9417369, 28252107]

約数ペア:

[(1, 28252107), (3, 9417369), (9, 3139123), (13, 2173239), (19, 1486953), (39, 724413), (57, 495651), (71, 397917), (117, 241471), (171, 165217), (179, 157833), (213, 132639), (247, 114381), (537, 52611), (639, 44213), (741, 38127), (923, 30609), (1349, 20943), (1611, 17537), (2223, 12709), (2327, 12141), (2769, 10203), (3401, 8307), (4047, 6981)]