21156428

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{673}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 38498880

約数和(自身を除く): 17342452

約数列:

[1, 2, 4, 29, 58, 116, 271, 542, 673, 1084, 1346, 2692, 7859, 15718, 19517, 31436, 39034, 78068, 182383, 364766, 729532, 5289107, 10578214, 21156428]

約数ペア:

[(1, 21156428), (2, 10578214), (4, 5289107), (29, 729532), (58, 364766), (116, 182383), (271, 78068), (542, 39034), (673, 31436), (1084, 19517), (1346, 15718), (2692, 7859)]