81143440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144899}}^1$

素因数の和:144919

約数の個数: 40

約数和(自身を含む): 215611200

約数和(自身を除く): 134467760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144899, 289798, 579596, 724495, 1014293, 1159192, 1448990, 2028586, 2318384, 2897980, 4057172, 5071465, 5795960, 8114344, 10142930, 11591920, 16228688, 20285860, 40571720, 81143440]

約数ペア:

[(1, 81143440), (2, 40571720), (4, 20285860), (5, 16228688), (7, 11591920), (8, 10142930), (10, 8114344), (14, 5795960), (16, 5071465), (20, 4057172), (28, 2897980), (35, 2318384), (40, 2028586), (56, 1448990), (70, 1159192), (80, 1014293), (112, 724495), (140, 579596), (280, 289798), (560, 144899)]