28916690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1321}}^1$

素因数の和:1538

約数の個数: 32

約数和(自身を含む): 57110400

約数和(自身を除く): 28193710

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 995, 1321, 1990, 2189, 2642, 4378, 6605, 10945, 13210, 14531, 21890, 29062, 72655, 145310, 262879, 525758, 1314395, 2628790, 2891669, 5783338, 14458345, 28916690]

約数ペア:

[(1, 28916690), (2, 14458345), (5, 5783338), (10, 2891669), (11, 2628790), (22, 1314395), (55, 525758), (110, 262879), (199, 145310), (398, 72655), (995, 29062), (1321, 21890), (1990, 14531), (2189, 13210), (2642, 10945), (4378, 6605)]