20123781356

素因数分解:

$2^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{3222899}}^1$

素因数の和:3223133

約数の個数: 24

約数和(自身を含む): 40428057600

約数和(自身を除く): 20304276244

約数列:

[1, 2, 4, 7, 14, 28, 223, 446, 892, 1561, 3122, 6244, 3222899, 6445798, 12891596, 22560293, 45120586, 90241172, 718706477, 1437412954, 2874825908, 5030945339, 10061890678, 20123781356]

約数ペア:

[(1, 20123781356), (2, 10061890678), (4, 5030945339), (7, 2874825908), (14, 1437412954), (28, 718706477), (223, 90241172), (446, 45120586), (892, 22560293), (1561, 12891596), (3122, 6445798), (6244, 3222899)]