20654864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{75937}}^1$

素因数の和:75962

約数の個数: 20

約数和(自身を含む): 42373404

約数和(自身を除く): 21718540

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 75937, 151874, 303748, 607496, 1214992, 1290929, 2581858, 5163716, 10327432, 20654864]

約数ペア:

[(1, 20654864), (2, 10327432), (4, 5163716), (8, 2581858), (16, 1290929), (17, 1214992), (34, 607496), (68, 303748), (136, 151874), (272, 75937)]