21021429

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2579}}^1$

素因数の和:2625

約数の個数: 32

約数和(自身を含む): 34675200

約数和(自身を除く): 13653771

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 143, 209, 247, 429, 627, 741, 2579, 2717, 7737, 8151, 28369, 33527, 49001, 85107, 100581, 147003, 368797, 539011, 637013, 1106391, 1617033, 1911039, 7007143, 21021429]

約数ペア:

[(1, 21021429), (3, 7007143), (11, 1911039), (13, 1617033), (19, 1106391), (33, 637013), (39, 539011), (57, 368797), (143, 147003), (209, 100581), (247, 85107), (429, 49001), (627, 33527), (741, 28369), (2579, 8151), (2717, 7737)]