21807002

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19717}}^1$

素因数の和:19805

約数の個数: 16

約数和(自身を含む): 37858560

約数和(自身を除く): 16051558

約数列:

[1, 2, 7, 14, 79, 158, 553, 1106, 19717, 39434, 138019, 276038, 1557643, 3115286, 10903501, 21807002]

約数ペア:

[(1, 21807002), (2, 10903501), (7, 3115286), (14, 1557643), (79, 276038), (158, 138019), (553, 39434), (1106, 19717)]