21270368

素因数分解:

$2^5\times 7^1\times {\mathrm{269}}^1\times {\mathrm{353}}^1$

素因数の和:639

約数の個数: 48

約数和(自身を含む): 48172320

約数和(自身を除く): 26901952

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 269, 353, 538, 706, 1076, 1412, 1883, 2152, 2471, 2824, 3766, 4304, 4942, 5648, 7532, 8608, 9884, 11296, 15064, 19768, 30128, 39536, 60256, 79072, 94957, 189914, 379828, 664699, 759656, 1329398, 1519312, 2658796, 3038624, 5317592, 10635184, 21270368]

約数ペア:

[(1, 21270368), (2, 10635184), (4, 5317592), (7, 3038624), (8, 2658796), (14, 1519312), (16, 1329398), (28, 759656), (32, 664699), (56, 379828), (112, 189914), (224, 94957), (269, 79072), (353, 60256), (538, 39536), (706, 30128), (1076, 19768), (1412, 15064), (1883, 11296), (2152, 9884), (2471, 8608), (2824, 7532), (3766, 5648), (4304, 4942)]