21360016

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32561}}^1$

素因数の和:32610

約数の個数: 20

約数和(自身を含む): 42395724

約数和(自身を除く): 21035708

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32561, 65122, 130244, 260488, 520976, 1335001, 2670002, 5340004, 10680008, 21360016]

約数ペア:

[(1, 21360016), (2, 10680008), (4, 5340004), (8, 2670002), (16, 1335001), (41, 520976), (82, 260488), (164, 130244), (328, 65122), (656, 32561)]