21210356

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{823}}^1$

素因数の和:1223

約数の個数: 24

約数和(自身を含む): 39453120

約数和(自身を除く): 18242764

約数列:

[1, 2, 4, 17, 34, 68, 379, 758, 823, 1516, 1646, 3292, 6443, 12886, 13991, 25772, 27982, 55964, 311917, 623834, 1247668, 5302589, 10605178, 21210356]

約数ペア:

[(1, 21210356), (2, 10605178), (4, 5302589), (17, 1247668), (34, 623834), (68, 311917), (379, 55964), (758, 27982), (823, 25772), (1516, 13991), (1646, 12886), (3292, 6443)]