80040040

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7121}}^1$

素因数の和:7413

約数の個数: 32

約数和(自身を含む): 180756360

約数和(自身を除く): 100716320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 7121, 11240, 14242, 28484, 35605, 56968, 71210, 142420, 284840, 2001001, 4002002, 8004004, 10005005, 16008008, 20010010, 40020020, 80040040]

約数ペア:

[(1, 80040040), (2, 40020020), (4, 20010010), (5, 16008008), (8, 10005005), (10, 8004004), (20, 4002002), (40, 2001001), (281, 284840), (562, 142420), (1124, 71210), (1405, 56968), (2248, 35605), (2810, 28484), (5620, 14242), (7121, 11240)]