21113807

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 26243280

約数和(自身を除く): 5129473

約数列:

[1, 11, 13, 19, 143, 209, 247, 361, 409, 2717, 3971, 4499, 4693, 5317, 7771, 51623, 58487, 85481, 101023, 147649, 1111253, 1624139, 1919437, 21113807]

約数ペア:

[(1, 21113807), (11, 1919437), (13, 1624139), (19, 1111253), (143, 147649), (209, 101023), (247, 85481), (361, 58487), (409, 51623), (2717, 7771), (3971, 5317), (4499, 4693)]