20377984

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 45496080

約数和(自身を除く): 25118096

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 41, 44, 64, 82, 88, 128, 164, 176, 328, 352, 353, 451, 656, 704, 706, 902, 1312, 1408, 1412, 1804, 2624, 2824, 3608, 3883, 5248, 5648, 7216, 7766, 11296, 14432, 14473, 15532, 22592, 28864, 28946, 31064, 45184, 57728, 57892, 62128, 115784, 124256, 159203, 231568, 248512, 318406, 463136, 497024, 636812, 926272, 1273624, 1852544, 2547248, 5094496, 10188992, 20377984]

約数ペア:

[(1, 20377984), (2, 10188992), (4, 5094496), (8, 2547248), (11, 1852544), (16, 1273624), (22, 926272), (32, 636812), (41, 497024), (44, 463136), (64, 318406), (82, 248512), (88, 231568), (128, 159203), (164, 124256), (176, 115784), (328, 62128), (352, 57892), (353, 57728), (451, 45184), (656, 31064), (704, 28946), (706, 28864), (902, 22592), (1312, 15532), (1408, 14473), (1412, 14432), (1804, 11296), (2624, 7766), (2824, 7216), (3608, 5648), (3883, 5248)]