20663440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36899}}^1$

素因数の和:36919

約数の個数: 40

約数和(自身を含む): 54907200

約数和(自身を除く): 34243760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36899, 73798, 147596, 184495, 258293, 295192, 368990, 516586, 590384, 737980, 1033172, 1291465, 1475960, 2066344, 2582930, 2951920, 4132688, 5165860, 10331720, 20663440]

約数ペア:

[(1, 20663440), (2, 10331720), (4, 5165860), (5, 4132688), (7, 2951920), (8, 2582930), (10, 2066344), (14, 1475960), (16, 1291465), (20, 1033172), (28, 737980), (35, 590384), (40, 516586), (56, 368990), (70, 295192), (80, 258293), (112, 184495), (140, 147596), (280, 73798), (560, 36899)]