21065728

素因数分解:

$2^{12}\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:200

約数の個数: 52

約数和(自身を含む): 43576120

約数和(自身を除く): 22510392

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 128, 139, 148, 256, 278, 296, 512, 556, 592, 1024, 1112, 1184, 2048, 2224, 2368, 4096, 4448, 4736, 5143, 8896, 9472, 10286, 17792, 18944, 20572, 35584, 37888, 41144, 71168, 75776, 82288, 142336, 151552, 164576, 284672, 329152, 569344, 658304, 1316608, 2633216, 5266432, 10532864, 21065728]

約数ペア:

[(1, 21065728), (2, 10532864), (4, 5266432), (8, 2633216), (16, 1316608), (32, 658304), (37, 569344), (64, 329152), (74, 284672), (128, 164576), (139, 151552), (148, 142336), (256, 82288), (278, 75776), (296, 71168), (512, 41144), (556, 37888), (592, 35584), (1024, 20572), (1112, 18944), (1184, 17792), (2048, 10286), (2224, 9472), (2368, 8896), (4096, 5143), (4448, 4736)]