80552920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{287689}}^1$

素因数の和:287707

約数の個数: 32

約数和(自身を含む): 207136800

約数和(自身を除く): 126583880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 287689, 575378, 1150756, 1438445, 2013823, 2301512, 2876890, 4027646, 5753780, 8055292, 10069115, 11507560, 16110584, 20138230, 40276460, 80552920]

約数ペア:

[(1, 80552920), (2, 40276460), (4, 20138230), (5, 16110584), (7, 11507560), (8, 10069115), (10, 8055292), (14, 5753780), (20, 4027646), (28, 2876890), (35, 2301512), (40, 2013823), (56, 1438445), (70, 1150756), (140, 575378), (280, 287689)]