208021215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{19727}}^1$

素因数の和:19791

約数の個数: 32

約数和(自身を含む): 359838720

約数和(自身を除く): 151817505

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 2109, 3515, 10545, 19727, 59181, 98635, 295905, 374813, 729899, 1124439, 1874065, 2189697, 3649495, 5622195, 10948485, 13868081, 41604243, 69340405, 208021215]

約数ペア:

[(1, 208021215), (3, 69340405), (5, 41604243), (15, 13868081), (19, 10948485), (37, 5622195), (57, 3649495), (95, 2189697), (111, 1874065), (185, 1124439), (285, 729899), (555, 374813), (703, 295905), (2109, 98635), (3515, 59181), (10545, 19727)]