18089780120

素因数分解:

$2^3\times 5^1\times {\mathrm{2939}}^1\times {\mathrm{153877}}^1$

素因数の和:156827

約数の個数: 32

約数和(自身を含む): 40716118800

約数和(自身を除く): 22626338680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2939, 5878, 11756, 14695, 23512, 29390, 58780, 117560, 153877, 307754, 615508, 769385, 1231016, 1538770, 3077540, 6155080, 452244503, 904489006, 1808978012, 2261222515, 3617956024, 4522445030, 9044890060, 18089780120]

約数ペア:

[(1, 18089780120), (2, 9044890060), (4, 4522445030), (5, 3617956024), (8, 2261222515), (10, 1808978012), (20, 904489006), (40, 452244503), (2939, 6155080), (5878, 3077540), (11756, 1538770), (14695, 1231016), (23512, 769385), (29390, 615508), (58780, 307754), (117560, 153877)]