20344500920

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{786109}}^1$

素因数の和:786767

約数の個数: 32

約数和(自身を含む): 45845935200

約数和(自身を除く): 25501434280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 5176, 6470, 12940, 25880, 786109, 1572218, 3144436, 3930545, 6288872, 7861090, 15722180, 31444360, 508612523, 1017225046, 2034450092, 2543062615, 4068900184, 5086125230, 10172250460, 20344500920]

約数ペア:

[(1, 20344500920), (2, 10172250460), (4, 5086125230), (5, 4068900184), (8, 2543062615), (10, 2034450092), (20, 1017225046), (40, 508612523), (647, 31444360), (1294, 15722180), (2588, 7861090), (3235, 6288872), (5176, 3930545), (6470, 3144436), (12940, 1572218), (25880, 786109)]