20207800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^2\times {\mathrm{191}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 49371840

約数和(自身を除く): 29164040

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 191, 200, 230, 382, 460, 529, 575, 764, 920, 955, 1058, 1150, 1528, 1910, 2116, 2300, 2645, 3820, 4232, 4393, 4600, 4775, 5290, 7640, 8786, 9550, 10580, 13225, 17572, 19100, 21160, 21965, 26450, 35144, 38200, 43930, 52900, 87860, 101039, 105800, 109825, 175720, 202078, 219650, 404156, 439300, 505195, 808312, 878600, 1010390, 2020780, 2525975, 4041560, 5051950, 10103900, 20207800]

約数ペア:

[(1, 20207800), (2, 10103900), (4, 5051950), (5, 4041560), (8, 2525975), (10, 2020780), (20, 1010390), (23, 878600), (25, 808312), (40, 505195), (46, 439300), (50, 404156), (92, 219650), (100, 202078), (115, 175720), (184, 109825), (191, 105800), (200, 101039), (230, 87860), (382, 52900), (460, 43930), (529, 38200), (575, 35144), (764, 26450), (920, 21965), (955, 21160), (1058, 19100), (1150, 17572), (1528, 13225), (1910, 10580), (2116, 9550), (2300, 8786), (2645, 7640), (3820, 5290), (4232, 4775), (4393, 4600)]