71200040

素因数分解:

$2^3\times 5^1\times {\mathrm{1780001}}^1$

素因数の和:1780012

約数の個数: 16

約数和(自身を含む): 160200180

約数和(自身を除く): 89000140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1780001, 3560002, 7120004, 8900005, 14240008, 17800010, 35600020, 71200040]

約数ペア:

[(1, 71200040), (2, 35600020), (4, 17800010), (5, 14240008), (8, 8900005), (10, 7120004), (20, 3560002), (40, 1780001)]