28371357

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3491}}^1$

素因数の和:3550

約数の個数: 32

約数和(自身を含む): 49167360

約数和(自身を除く): 20796003

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2709, 3491, 8127, 10473, 24437, 31419, 73311, 94257, 150113, 219933, 450339, 659799, 1050791, 1351017, 3152373, 4053051, 9457119, 28371357]

約数ペア:

[(1, 28371357), (3, 9457119), (7, 4053051), (9, 3152373), (21, 1351017), (27, 1050791), (43, 659799), (63, 450339), (129, 219933), (189, 150113), (301, 94257), (387, 73311), (903, 31419), (1161, 24437), (2709, 10473), (3491, 8127)]