80807440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144299}}^1$

素因数の和:144319

約数の個数: 40

約数和(自身を含む): 214718400

約数和(自身を除く): 133910960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144299, 288598, 577196, 721495, 1010093, 1154392, 1442990, 2020186, 2308784, 2885980, 4040372, 5050465, 5771960, 8080744, 10100930, 11543920, 16161488, 20201860, 40403720, 80807440]

約数ペア:

[(1, 80807440), (2, 40403720), (4, 20201860), (5, 16161488), (7, 11543920), (8, 10100930), (10, 8080744), (14, 5771960), (16, 5050465), (20, 4040372), (28, 2885980), (35, 2308784), (40, 2020186), (56, 1442990), (70, 1154392), (80, 1010093), (112, 721495), (140, 577196), (280, 288598), (560, 144299)]