199940240

素因数分解:

$2^4\times 5^1\times {\mathrm{2499253}}^1$

素因数の和:2499266

約数の個数: 20

約数和(自身を含む): 464861244

約数和(自身を除く): 264921004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2499253, 4998506, 9997012, 12496265, 19994024, 24992530, 39988048, 49985060, 99970120, 199940240]

約数ペア:

[(1, 199940240), (2, 99970120), (4, 49985060), (5, 39988048), (8, 24992530), (10, 19994024), (16, 12496265), (20, 9997012), (40, 4998506), (80, 2499253)]