20128600

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5297}}^1$

素因数の和:5332

約数の個数: 48

約数和(自身を含む): 49271400

約数和(自身を除く): 29142800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5297, 10594, 21188, 26485, 42376, 52970, 100643, 105940, 132425, 201286, 211880, 264850, 402572, 503215, 529700, 805144, 1006430, 1059400, 2012860, 2516075, 4025720, 5032150, 10064300, 20128600]

約数ペア:

[(1, 20128600), (2, 10064300), (4, 5032150), (5, 4025720), (8, 2516075), (10, 2012860), (19, 1059400), (20, 1006430), (25, 805144), (38, 529700), (40, 503215), (50, 402572), (76, 264850), (95, 211880), (100, 201286), (152, 132425), (190, 105940), (200, 100643), (380, 52970), (475, 42376), (760, 26485), (950, 21188), (1900, 10594), (3800, 5297)]