28807120

素因数分解:

$2^4\times 5^1\times {\mathrm{360089}}^1$

素因数の和:360102

約数の個数: 20

約数和(自身を含む): 66976740

約数和(自身を除く): 38169620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 360089, 720178, 1440356, 1800445, 2880712, 3600890, 5761424, 7201780, 14403560, 28807120]

約数ペア:

[(1, 28807120), (2, 14403560), (4, 7201780), (5, 5761424), (8, 3600890), (10, 2880712), (16, 1800445), (20, 1440356), (40, 720178), (80, 360089)]