21425408

素因数分解:

$2^8\times {\mathrm{127}}^1\times {\mathrm{659}}^1$

素因数の和:802

約数の個数: 36

約数和(自身を含む): 43169280

約数和(自身を除く): 21743872

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 128, 254, 256, 508, 659, 1016, 1318, 2032, 2636, 4064, 5272, 8128, 10544, 16256, 21088, 32512, 42176, 83693, 84352, 167386, 168704, 334772, 669544, 1339088, 2678176, 5356352, 10712704, 21425408]

約数ペア:

[(1, 21425408), (2, 10712704), (4, 5356352), (8, 2678176), (16, 1339088), (32, 669544), (64, 334772), (127, 168704), (128, 167386), (254, 84352), (256, 83693), (508, 42176), (659, 32512), (1016, 21088), (1318, 16256), (2032, 10544), (2636, 8128), (4064, 5272)]