128418740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{207127}}^1$

素因数の和:207167

約数の個数: 24

約数和(自身を含む): 278380032

約数和(自身を除く): 149961292

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 207127, 414254, 828508, 1035635, 2071270, 4142540, 6420937, 12841874, 25683748, 32104685, 64209370, 128418740]

約数ペア:

[(1, 128418740), (2, 64209370), (4, 32104685), (5, 25683748), (10, 12841874), (20, 6420937), (31, 4142540), (62, 2071270), (124, 1035635), (155, 828508), (310, 414254), (620, 207127)]