28320621

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70979}}^1$

素因数の和:71008

約数の個数: 16

約数和(自身を含む): 45427200

約数和(自身を除く): 17106579

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70979, 212937, 496853, 1348601, 1490559, 4045803, 9440207, 28320621]

約数ペア:

[(1, 28320621), (3, 9440207), (7, 4045803), (19, 1490559), (21, 1348601), (57, 496853), (133, 212937), (399, 70979)]