21455792

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32707}}^1$

素因数の和:32756

約数の個数: 20

約数和(自身を含む): 42585816

約数和(自身を除く): 21130024

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32707, 65414, 130828, 261656, 523312, 1340987, 2681974, 5363948, 10727896, 21455792]

約数ペア:

[(1, 21455792), (2, 10727896), (4, 5363948), (8, 2681974), (16, 1340987), (41, 523312), (82, 261656), (164, 130828), (328, 65414), (656, 32707)]