80605520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11321}}^1$

素因数の和:11423

約数の個数: 40

約数和(自身を含む): 189530280

約数和(自身を除く): 108924760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 11321, 22642, 45284, 56605, 90568, 113210, 181136, 226420, 452840, 905680, 1007569, 2015138, 4030276, 5037845, 8060552, 10075690, 16121104, 20151380, 40302760, 80605520]

約数ペア:

[(1, 80605520), (2, 40302760), (4, 20151380), (5, 16121104), (8, 10075690), (10, 8060552), (16, 5037845), (20, 4030276), (40, 2015138), (80, 1007569), (89, 905680), (178, 452840), (356, 226420), (445, 181136), (712, 113210), (890, 90568), (1424, 56605), (1780, 45284), (3560, 22642), (7120, 11321)]