1991570500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{209639}}^1$

素因数の和:209677

約数の個数: 48

約数和(自身を含む): 4578537600

約数和(自身を除く): 2586967100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2375, 4750, 9500, 209639, 419278, 838556, 1048195, 2096390, 3983141, 4192780, 5240975, 7966282, 10481950, 15932564, 19915705, 20963900, 26204875, 39831410, 52409750, 79662820, 99578525, 104819500, 199157050, 398314100, 497892625, 995785250, 1991570500]

約数ペア:

[(1, 1991570500), (2, 995785250), (4, 497892625), (5, 398314100), (10, 199157050), (19, 104819500), (20, 99578525), (25, 79662820), (38, 52409750), (50, 39831410), (76, 26204875), (95, 20963900), (100, 19915705), (125, 15932564), (190, 10481950), (250, 7966282), (380, 5240975), (475, 4192780), (500, 3983141), (950, 2096390), (1900, 1048195), (2375, 838556), (4750, 419278), (9500, 209639)]