16821805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3361}}^1$

素因数の和:3397

約数の個数: 32

約数和(自身を含む): 27111168

約数和(自身を除く): 10289363

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 3361, 5005, 16805, 23527, 36971, 43693, 117635, 184855, 218465, 258797, 305851, 480623, 1293985, 1529255, 2403115, 3364361, 16821805]

約数ペア:

[(1, 16821805), (5, 3364361), (7, 2403115), (11, 1529255), (13, 1293985), (35, 480623), (55, 305851), (65, 258797), (77, 218465), (91, 184855), (143, 117635), (385, 43693), (455, 36971), (715, 23527), (1001, 16805), (3361, 5005)]