72901820

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{18503}}^1$

素因数の和:18709

約数の個数: 24

約数和(自身を含む): 153879264

約数和(自身を除く): 80977444

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 18503, 37006, 74012, 92515, 185030, 370060, 3645091, 7290182, 14580364, 18225455, 36450910, 72901820]

約数ペア:

[(1, 72901820), (2, 36450910), (4, 18225455), (5, 14580364), (10, 7290182), (20, 3645091), (197, 370060), (394, 185030), (788, 92515), (985, 74012), (1970, 37006), (3940, 18503)]